INTERNAL CONTROL RPT

REPORT OF INDEPENDENT REGISTERED PUBLIC
ACCOUNTING FIRM

To the Trustees of Eaton Vance Special Investment Trust and
Shareholders of Eaton Vance Special Equities Fund:

In planning and performing our audit of the financial statements
of Eaton Vance Special Equities Fund (the "Fund") (one of the
funds constituting Eaton Vance Special Investment Trust) as of
and for the year ended December 31, 2018, in accordance with
the standards of the Public Company Accounting Oversight
Board (United States) (PCAOB), we considered the Fund's
internal control over financial reporting, including controls over
safeguarding securities, as a basis for designing our auditing
procedures for the purpose of expressing our opinion on the
financial statements and to comply with the requirements of
Form N-CEN, but not for the purpose of expressing an opinion
on the effectiveness of the Fund's internal control over financial
reporting. Accordingly, we express no such opinion.

The management of the Fund is responsible for establishing and
maintaining effective internal control over financial reporting. In
fulfilling this responsibility, estimates and judgments by
management are required to assess the expected benefits and
related costs of controls. A fund's internal control over financial
reporting is a process designed to provide reasonable assurance
regarding the reliability of financial reporting and the preparation
of financial statements for external purposes in accordance with
generally accepted accounting principles. A fund's internal
control over financial reporting includes those policies and
procedures that (1) pertain to the maintenance of records that, in
reasonable detail, accurately and fairly reflect the transactions
and dispositions of the assets of the fund; (2) provide reasonable
assurance that transactions are recorded as necessary to permit
preparation of financial statements in accordance with generally
accepted accounting principles, and that receipts and
expenditures of the fund are being made only in accordance with
authorizations of management of the fund and trustees of the
trust; and (3) provide reasonable assurance regarding prevention
or timely detection of unauthorized acquisition, use, or
disposition of a fund's assets that could have a material effect on
the financial statements.

Because of its inherent limitations, internal control over financial
reporting may not prevent or detect misstatements. Also,
projections of any evaluation of effectiveness to future periods
are subject to the risk that controls may become inadequate
because of changes in conditions, or that the degree of
compliance with the policies or procedures may deteriorate.

A deficiency in internal control over financial reporting exists
when the design or operation of a control does not allow
management or employees, in the normal course of performing
their assigned functions, to prevent or detect misstatements on a
timely basis. A material weakness is a deficiency, or a
combination of deficiencies, in internal control over financial
reporting, such that there is a reasonable possibility that a
material misstatement of the fund's annual or interim financial
statements will not be prevented or detected on a timely basis.

Our consideration of the Fund's internal control over financial
reporting was for the limited purpose described in the first
paragraph and would not necessarily disclose all deficiencies in
internal control that might be material weaknesses under
standards established by the PCAOB. However, we noted no
deficiencies in the Fund's internal control over financial reporting
and its operation, including controls for safeguarding securities,
that we consider to be a material weakness, as defined above,
as of December 31, 2018.

This report is intended solely for the information and use of
management of the Fund and the Trustees of Eaton Vance
Special Investment Trust and the Securities and Exchange
Commission and is not intended to be and should not be used by
anyone other than these specified parties.

/s/ Deloitte & Touche LLP


Boston, Massachusetts
February 22, 2019

INTERNAL CONTROL RPT

REPORT OF INDEPENDENT REGISTERED PUBLIC
ACCOUNTING FIRM

To the Trustees of Eaton Vance Special Investment Trust and
Shareholders of Eaton Vance Dividend Builder Fund:

In planning and performing our audit of the financial statements of
Eaton Vance Dividend Builder Fund (the "Fund") (one of the
funds constituting Eaton Vance Special Investment Trust) as of
and for the year ended December 31, 2018, in accordance with
the standards of the Public Company Accounting Oversight
Board (United States) (PCAOB), we considered the Fund's
internal control over financial reporting, including controls over
safeguarding securities, as a basis for designing our auditing
procedures for the purpose of expressing our opinion on the
financial statements and to comply with the requirements of Form
N-CEN, but not for the purpose of expressing an opinion on the
effectiveness of the Fund's internal control over financial
reporting. Accordingly, we express no such opinion.

The management of the Fund is responsible for establishing and
maintaining effective internal control over financial reporting. In
fulfilling this responsibility, estimates and judgments by
management are required to assess the expected benefits and
related costs of controls. A fund's internal control over financial
reporting is a process designed to provide reasonable assurance
regarding the reliability of financial reporting and the preparation
of financial statements for external purposes in accordance with
generally accepted accounting principles. A fund's internal control
over financial reporting includes those policies and procedures
that (1) pertain to the maintenance of records that, in reasonable
detail, accurately and fairly reflect the transactions and
dispositions of the assets of the fund; (2) provide reasonable
assurance that transactions are recorded as necessary to permit
preparation of financial statements in accordance with generally
accepted accounting principles, and that receipts and
expenditures of the fund are being made only in accordance with
authorizations of management of the fund and trustees of the
trust; and (3) provide reasonable assurance regarding prevention
or timely detection of unauthorized acquisition, use, or disposition
of a fund's assets that could have a material effect on the
financial statements.

Because of its inherent limitations, internal control over financial
reporting may not prevent or detect misstatements. Also,
projections of any evaluation of effectiveness to future periods are
subject to the risk that controls may become inadequate because
of changes in conditions, or that the degree of compliance with
the policies or procedures may deteriorate.

A deficiency in internal control over financial reporting exists
when the design or operation of a control does not allow
management or employees, in the normal course of performing
their assigned functions, to prevent or detect misstatements on a
timely basis. A material weakness is a deficiency, or a
combination of deficiencies, in internal control over financial
reporting, such that there is a reasonable possibility that a
material misstatement of the fund's annual or interim financial
statements will not be prevented or detected on a timely basis.

Our consideration of the Fund's internal control over financial
reporting was for the limited purpose described in the first
paragraph and would not necessarily disclose all deficiencies in
internal control that might be material weaknesses under
standards established by the PCAOB. However, we noted no
deficiencies in the Fund's internal control over financial reporting
and its operation, including controls for safeguarding securities,
that we consider to be a material weakness, as defined above, as
of December 31, 2018.

This report is intended solely for the information and use of
management of the Fund and the Trustees of Eaton Vance
Special Investment Trust and the Securities and Exchange
Commission and is not intended to be and should not be used by
anyone other than these specified parties.

/s/ Deloitte & Touche LLP

Boston, Massachusetts
February 20, 2019

INTERNAL CONTROL RPT

REPORT OF INDEPENDENT REGISTERED PUBLIC
ACCOUNTING FIRM

To the Trustees of Eaton Vance Special Investment Trust and
Shareholders of Eaton Vance Real Estate Fund:

In planning and performing our audit of the financial statements
of Eaton Vance Real Estate Fund (the "Fund") (one of the funds
constituting Eaton Vance Special Investment Trust) as of and for
the year ended December 31, 2018, in accordance with the
standards of the Public Company Accounting Oversight Board
(United States) (PCAOB), we considered the Fund's internal
control over financial reporting, including controls over
safeguarding securities, as a basis for designing our auditing
procedures for the purpose of expressing our opinion on the
financial statements and to comply with the requirements of
Form N-CEN, but not for the purpose of expressing an opinion
on the effectiveness of the Fund's internal control over financial
reporting. Accordingly, we express no such opinion.

The management of the Fund is responsible for establishing and
maintaining effective internal control over financial reporting. In
fulfilling this responsibility, estimates and judgments by
management are required to assess the expected benefits and
related costs of controls. A fund's internal control over financial
reporting is a process designed to provide reasonable assurance
regarding the reliability of financial reporting and the preparation
of financial statements for external purposes in accordance with
generally accepted accounting principles. A fund's internal
control over financial reporting includes those policies and
procedures that (1) pertain to the maintenance of records that, in
reasonable detail, accurately and fairly reflect the transactions
and dispositions of the assets of the fund; (2) provide reasonable
assurance that transactions are recorded as necessary to permit
preparation of financial statements in accordance with generally
accepted accounting principles, and that receipts and
expenditures of the fund are being made only in accordance with
authorizations of management of the fund and trustees of the
trust; and (3) provide reasonable assurance regarding prevention
or timely detection of unauthorized acquisition, use, or
disposition of a fund's assets that could have a material effect on
the financial statements.

Because of its inherent limitations, internal control over financial
reporting may not prevent or detect misstatements. Also,
projections of any evaluation of effectiveness to future periods
are subject to the risk that controls may become inadequate
because of changes in conditions, or that the degree of
compliance with the policies or procedures may deteriorate.

A deficiency in internal control over financial reporting exists
when the design or operation of a control does not allow
management or employees, in the normal course of performing
their assigned functions, to prevent or detect misstatements on a
timely basis. A material weakness is a deficiency, or a
combination of deficiencies, in internal control over financial
reporting, such that there is a reasonable possibility that a
material misstatement of the fund's annual or interim financial
statements will not be prevented or detected on a timely basis.

Our consideration of the Fund's internal control over financial
reporting was for the limited purpose described in the first
paragraph and would not necessarily disclose all deficiencies in
internal control that might be material weaknesses under
standards established by the PCAOB. However, we noted no
deficiencies in the Fund's internal control over financial reporting
and its operation, including controls for safeguarding securities,
that we consider to be a material weakness, as defined above,
as of December 31, 2018.

This report is intended solely for the information and use of
management of the fund and the Trustees of Eaton Vance
Special Investment Trust and the Securities and Exchange
Commission and is not intended to be and should not be used by
anyone other than these specified parties.


/s/ Deloitte & Touche LLP


Boston, Massachusetts
February 22, 2019

INTERNAL CONTROL RPT

REPORT OF INDEPENDENT REGISTERED PUBLIC
ACCOUNTING FIRM

To the Trustees of Eaton Vance Special Investment Trust and
Shareholders of Eaton Vance Balanced Fund:

In planning and performing our audit of the financial statements of
Eaton Vance Balanced Fund (the "Fund") (one of the funds
constituting Eaton Vance Special Investment Trust) as of and for
the year ended December 31, 2018, in accordance with the
standards of the Public Company Accounting Oversight Board
(United States) (PCAOB), we considered the Fund's internal
control over financial reporting, including controls over
safeguarding securities, as a basis for designing our auditing
procedures for the purpose of expressing our opinion on the
financial statements and to comply with the requirements of Form
N-CEN, but not for the purpose of expressing an opinion on the
effectiveness of the Fund's internal control over financial
reporting. Accordingly, we express no such opinion.

The management of the Fund is responsible for establishing and
maintaining effective internal control over financial reporting. In
fulfilling this responsibility, estimates and judgments by
management are required to assess the expected benefits and
related costs of controls. A fund's internal control over financial
reporting is a process designed to provide reasonable assurance
regarding the reliability of financial reporting and the preparation
of financial statements for external purposes in accordance with
generally accepted accounting principles. A fund's internal control
over financial reporting includes those policies and procedures
that (1) pertain to the maintenance of records that, in reasonable
detail, accurately and fairly reflect the transactions and
dispositions of the assets of the fund; (2) provide reasonable
assurance that transactions are recorded as necessary to permit
preparation of financial statements in accordance with generally
accepted accounting principles, and that receipts and
expenditures of the fund are being made only in accordance with
authorizations of management of the fund and trustees of the
trust; and (3) provide reasonable assurance regarding prevention
or timely detection of unauthorized acquisition, use, or disposition
of a fund's assets that could have a material effect on the
financial statements.

Because of its inherent limitations, internal control over financial
reporting may not prevent or detect misstatements. Also,
projections of any evaluation of effectiveness to future periods are
subject to the risk that controls may become inadequate because
of changes in conditions, or that the degree of compliance with
the policies or procedures may deteriorate.

A deficiency in internal control over financial reporting exists
when the design or operation of a control does not allow
management or employees, in the normal course of performing
their assigned functions, to prevent or detect misstatements on a
timely basis. A material weakness is a deficiency, or a
combination of deficiencies, in internal control over financial
reporting, such that there is a reasonable possibility that a
material misstatement of the fund's annual or interim financial
statements will not be prevented or detected on a timely basis.

Our consideration of the Fund's internal control over financial
reporting was for the limited purpose described in the first
paragraph and would not necessarily disclose all deficiencies in
internal control that might be material weaknesses under
standards established by the PCAOB. However, we noted no
deficiencies in the Fund's internal control over financial reporting
and its operation, including controls for safeguarding securities,
that we consider to be a material weakness, as defined above, as
of December 31, 2018.

This report is intended solely for the information and use of
management of the Fund and the Trustees of Eaton Vance
Special Investment Trust and the Securities and Exchange
Commission and is not intended to be and should not be used by
anyone other than these specified parties.

/s/ Deloitte & Touche LLP

Boston, Massachusetts
February 22, 2019

INTERNAL CONTROL RPT

REPORT OF INDEPENDENT REGISTERED PUBLIC
ACCOUNTING FIRM

To the Trustees of Eaton Vance Special Investment Trust and
Shareholders of Eaton Vance Growth Fund:

In planning and performing our audit of the financial statements of
Eaton Vance Growth Fund (the "Fund") (one of the funds constituting
Eaton Vance Special Investment Trust) as of and for the year ended
December 31, 2018, in accordance with the standards of the Public
Company Accounting Oversight Board (United States) (PCAOB), we
considered the Fund's internal control over financial reporting,
including controls over safeguarding securities, as a basis for
designing our auditing procedures for the purpose of expressing our
opinion on the financial statements and to comply with the
requirements of Form N-CEN, but not for the purpose of expressing
an opinion on the effectiveness of the Fund's internal control over
financial reporting. Accordingly, we express no such opinion.

The management of the Fund is responsible for establishing and
maintaining effective internal control over financial reporting. In
fulfilling this responsibility, estimates and judgments by management
are required to assess the expected benefits and related costs of
controls. A fund's internal control over financial reporting is a process
designed to provide reasonable assurance regarding the reliability of
financial reporting and the preparation of financial statements for
external purposes in accordance with generally accepted accounting
principles. A fund's internal control over financial reporting includes
those policies and procedures that (1) pertain to the maintenance of
records that, in reasonable detail, accurately and fairly reflect the
transactions and dispositions of the assets of the fund; (2) provide
reasonable assurance that transactions are recorded as necessary to
permit preparation of financial statements in accordance with
generally accepted accounting principles, and that receipts and
expenditures of the fund are being made only in accordance with
authorizations of management of the fund and trustees of the trust;
and (3) provide reasonable assurance regarding prevention or timely
detection of unauthorized acquisition, use, or disposition of a fund's
assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial
reporting may not prevent or detect misstatements. Also, projections
of any evaluation of effectiveness to future periods are subject to the
risk that controls may become inadequate because of changes in
conditions, or that the degree of compliance with the policies or
procedures may deteriorate.

A deficiency in internal control over financial reporting exists when the
design or operation of a control does not allow management or
employees, in the normal course of performing their assigned
functions, to prevent or detect misstatements on a timely basis. A
material weakness is a deficiency, or a combination of deficiencies, in
internal control over financial reporting, such that there is a
reasonable possibility that a material misstatement of the fund's
annual or interim financial statements will not be prevented or
detected on a timely basis.

Our consideration of the Fund's internal control over financial
reporting was for the limited purpose described in the first paragraph
and would not necessarily disclose all deficiencies in internal control
that might be material weaknesses under standards established by
the PCAOB. However, we noted no deficiencies in the Fund's internal
control over financial reporting and its operation, including controls for
safeguarding securities, that we consider to be a material weakness,
as defined above, as of December 31, 2018.

This report is intended solely for the information and use of
management of the Fund and the Trustees of Eaton Vance Special
Investment Trust and the Securities and Exchange Commission and
is not intended to be and should not be used by anyone other than
these specified parties.

/s/ Deloitte & Touche LLP

Boston, Massachusetts
February 19, 2019

INTERNAL CONTROL RPT

REPORT OF INDEPENDENT REGISTERED PUBLIC
ACCOUNTING FIRM

To the Trustees of Eaton Vance Special Investment Trust
and Shareholders of Eaton Vance Small-Cap Fund:

In planning and performing our audit of the financial
statements of Eaton Vance Small-Cap Fund (the "Fund")
(one of the funds constituting Eaton Vance Special
Investment Trust) as of and for the year ended December
31, 2018, in accordance with the standards of the Public
Company Accounting Oversight Board (United States)
(PCAOB), we considered the Fund's internal control over
financial reporting, including controls over safeguarding
securities, as a basis for designing our auditing procedures
for the purpose of expressing our opinion on the financial
statements and to comply with the requirements of Form N-
CEN, but not for the purpose of expressing an opinion on
the effectiveness of the Fund's internal control over financial
reporting. Accordingly, we express no such opinion.

The management of the Fund is responsible for establishing
and maintaining effective internal control over financial
reporting. In fulfilling this responsibility, estimates and
judgments by management are required to assess the
expected benefits and related costs of controls. A fund's
internal control over financial reporting is a process
designed to provide reasonable assurance regarding the
reliability of financial reporting and the preparation of
financial statements for external purposes in accordance
with generally accepted accounting principles. A fund's
internal control over financial reporting includes those
policies and procedures that (1) pertain to the maintenance
of records that, in reasonable detail, accurately and fairly
reflect the transactions and dispositions of the assets of the
fund; (2) provide reasonable assurance that transactions
are recorded as necessary to permit preparation of financial
statements in accordance with generally accepted
accounting principles, and that receipts and expenditures of
the fund are being made only in accordance with
authorizations of management of the fund and trustees of
the trust; and (3) provide reasonable assurance regarding
prevention or timely detection of unauthorized acquisition,
use, or disposition of a fund's assets that could have a
material effect on the financial statements.

Because of its inherent limitations, internal control over
financial reporting may not prevent or detect misstatements.
Also, projections of any evaluation of effectiveness to future
periods are subject to the risk that controls may become
inadequate because of changes in conditions, or that the
degree of compliance with the policies or procedures may
deteriorate.

A deficiency in internal control over financial reporting exists
when the design or operation of a control does not allow
management or employees, in the normal course of
performing their assigned functions, to prevent or detect
misstatements on a timely basis. A material weakness is a
deficiency, or a combination of deficiencies, in internal
control over financial reporting, such that there is a
reasonable possibility that a material misstatement of the
fund's annual or interim financial statements will not be
prevented or detected on a timely basis.

Our consideration of the Fund's internal control over
financial reporting was for the limited purpose described in
the first paragraph and would not necessarily disclose all
deficiencies in internal control that might be material
weaknesses under standards established by the PCAOB.
However, we noted no deficiencies in the Fund's internal
control over financial reporting and its operation, including
controls for safeguarding securities, that we consider to be
a material weakness, as defined above, as of December 31,
2018.

This report is intended solely for the information and use of
management of the Fund and the Trustees of Eaton Vance
Special Investment Trust and the Securities and Exchange
Commission and is not intended to be and should not be
used by anyone other than these specified parties.

/s/ Deloitte & Touche LLP

Boston, Massachusetts
February 22, 2019

INTERNAL CONTROL RPT

REPORT OF INDEPENDENT REGISTERED PUBLIC
ACCOUNTING FIRM

To the Trustees of Eaton Vance Special Investment Trust and
Shareholders of Eaton Vance Greater India Fund:

In planning and performing our audit of the financial statements
of Eaton Vance Greater India Fund (the "Fund") (one of the
funds constituting Eaton Vance Special Investment Trust) as of
and for the year ended December 31, 2018, in accordance with
the standards of the Public Company Accounting Oversight
Board (United States) (PCAOB), we considered the Fund's
internal control over financial reporting, including controls over
safeguarding securities, as a basis for designing our auditing
procedures for the purpose of expressing our opinion on the
financial statements and to comply with the requirements of
Form N-CEN, but not for the purpose of expressing an opinion
on the effectiveness of the Fund's internal control over financial
reporting. Accordingly, we express no such opinion.

The management of the Fund is responsible for establishing and
maintaining effective internal control over financial reporting. In
fulfilling this responsibility, estimates and judgments by
management are required to assess the expected benefits and
related costs of controls. A fund's internal control over financial
reporting is a process designed to provide reasonable assurance
regarding the reliability of financial reporting and the preparation
of financial statements for external purposes in accordance with
generally accepted accounting principles. A fund's internal
control over financial reporting includes those policies and
procedures that (1) pertain to the maintenance of records that, in
reasonable detail, accurately and fairly reflect the transactions
and dispositions of the assets of the fund; (2) provide reasonable
assurance that transactions are recorded as necessary to permit
preparation of financial statements in accordance with generally
accepted accounting principles, and that receipts and
expenditures of the fund are being made only in accordance with
authorizations of management of the fund and trustees of the
trust; and (3) provide reasonable assurance regarding prevention
or timely detection of unauthorized acquisition, use, or
disposition of a fund's assets that could have a material effect on
the financial statements.

Because of its inherent limitations, internal control over financial
reporting may not prevent or detect misstatements. Also,
projections of any evaluation of effectiveness to future periods
are subject to the risk that controls may become inadequate
because of changes in conditions, or that the degree of
compliance with the policies or procedures may deteriorate.

A deficiency in internal control over financial reporting exists
when the design or operation of a control does not allow
management or employees, in the normal course of performing
their assigned functions, to prevent or detect misstatements on a
timely basis. A material weakness is a deficiency, or a
combination of deficiencies, in internal control over financial
reporting, such that there is a reasonable possibility that a
material misstatement of the fund's annual or interim financial
statements will not be prevented or detected on a timely basis.

Our consideration of the Fund's internal control over financial
reporting was for the limited purpose described in the first
paragraph and would not necessarily disclose all deficiencies in
internal control that might be material weaknesses under
standards established by the PCAOB. However, we noted no
deficiencies in the Fund's internal control over financial reporting
and its operation, including controls for safeguarding securities,
that we consider to be a material weakness, as defined above,
as of December 31, 2018.

This report is intended solely for the information and use of
management of the fund and the Trustees of Eaton Vance
Special Investment Trust and the Securities and Exchange
Commission and is not intended to be and should not be used by
anyone other than these specified parties.

/s/ Deloitte & Touche LLP

Boston, Massachusetts
February 22, 2019

INTERNAL CONTROL RPT

REPORT OF INDEPENDENT REGISTERED PUBLIC
ACCOUNTING FIRM

To the Trustees of Eaton Vance Special Investment Trust and
Shareholders of Eaton Vance Large-Cap Value Fund:

In planning and performing our audit of the financial statements of
Eaton Vance Large-Cap Value Fund (the "Fund") (one of the
funds constituting Eaton Vance Special Investment Trust) as of
and for the year ended December 31, 2018, in accordance with
the standards of the Public Company Accounting Oversight
Board (United States) (PCAOB), we considered the Fund's
internal control over financial reporting, including controls over
safeguarding securities, as a basis for designing our auditing
procedures for the purpose of expressing our opinion on the
financial statements and to comply with the requirements of Form
N-CEN, but not for the purpose of expressing an opinion on the
effectiveness of the Fund's internal control over financial
reporting. Accordingly, we express no such opinion.

The management of the Fund is responsible for establishing and
maintaining effective internal control over financial reporting. In
fulfilling this responsibility, estimates and judgments by
management are required to assess the expected benefits and
related costs of controls. A fund's internal control over financial
reporting is a process designed to provide reasonable assurance
regarding the reliability of financial reporting and the preparation
of financial statements for external purposes in accordance with
generally accepted accounting principles. A fund's internal control
over financial reporting includes those policies and procedures
that (1) pertain to the maintenance of records that, in reasonable
detail, accurately and fairly reflect the transactions and
dispositions of the assets of the fund; (2) provide reasonable
assurance that transactions are recorded as necessary to permit
preparation of financial statements in accordance with generally
accepted accounting principles, and that receipts and
expenditures of the fund are being made only in accordance with
authorizations of management of the fund and trustees of the
trust; and (3) provide reasonable assurance regarding prevention
or timely detection of unauthorized acquisition, use, or disposition
of a fund's assets that could have a material effect on the
financial statements.

Because of its inherent limitations, internal control over financial
reporting may not prevent or detect misstatements. Also,
projections of any evaluation of effectiveness to future periods are
subject to the risk that controls may become inadequate because
of changes in conditions, or that the degree of compliance with
the policies or procedures may deteriorate.

A deficiency in internal control over financial reporting exists
when the design or operation of a control does not allow
management or employees, in the normal course of performing
their assigned functions, to prevent or detect misstatements on a
timely basis. A material weakness is a deficiency, or a
combination of deficiencies, in internal control over financial
reporting, such that there is a reasonable possibility that a
material misstatement of the fund's annual or interim financial
statements will not be prevented or detected on a timely basis.

Our consideration of the Fund's internal control over financial
reporting was for the limited purpose described in the first
paragraph and would not necessarily disclose all deficiencies in
internal control that might be material weaknesses under
standards established by the PCAOB. However, we noted no
deficiencies in the Fund's internal control over financial reporting
and its operation, including controls for safeguarding securities,
that we consider to be a material weakness, as defined above, as
of December 31, 2018.

This report is intended solely for the information and use of
management of the Fund and the Trustees of Eaton Vance
Special Investment Trust and the Securities and Exchange
Commission and is not intended to be and should not be used by
anyone other than these specified parties.

/s/ Deloitte & Touche LLP

Boston, Massachusetts
February 20, 2019

INTERNAL CONTROL RPT

REPORT OF INDEPENDENT REGISTERED PUBLIC
ACCOUNTING FIRM

To the Trustees of Eaton Vance Special Investment Trust and
Shareholders of Eaton Vance Core Bond Fund:

In planning and performing our audit of the financial statements of
Eaton Vance Core Bond Fund (the "Fund") (one of the funds
constituting Eaton Vance Special Investment Trust) as of and for
the year ended December 31, 2018, in accordance with the
standards of the Public Company Accounting Oversight Board
(United States) (PCAOB), we considered the Fund's internal
control over financial reporting, including controls over
safeguarding securities, as a basis for designing our auditing
procedures for the purpose of expressing our opinion on the
financial statements and to comply with the requirements of Form
N-CEN, but not for the purpose of expressing an opinion on the
effectiveness of the Fund's internal control over financial
reporting. Accordingly, we express no such opinion.

The management of the Fund is responsible for establishing and
maintaining effective internal control over financial reporting. In
fulfilling this responsibility, estimates and judgments by
management are required to assess the expected benefits and
related costs of controls. A fund's internal control over financial
reporting is a process designed to provide reasonable assurance
regarding the reliability of financial reporting and the preparation
of financial statements for external purposes in accordance with
generally accepted accounting principles. A fund's internal control
over financial reporting includes those policies and procedures
that (1) pertain to the maintenance of records that, in reasonable
detail, accurately and fairly reflect the transactions and
dispositions of the assets of the fund; (2) provide reasonable
assurance that transactions are recorded as necessary to permit
preparation of financial statements in accordance with generally
accepted accounting principles, and that receipts and
expenditures of the fund are being made only in accordance with
authorizations of management of the fund and trustees of the
trust; and (3) provide reasonable assurance regarding prevention
or timely detection of unauthorized acquisition, use, or disposition
of a fund's assets that could have a material effect on the
financial statements.

Because of its inherent limitations, internal control over financial
reporting may not prevent or detect misstatements. Also,
projections of any evaluation of effectiveness to future periods are
subject to the risk that controls may become inadequate because
of changes in conditions, or that the degree of compliance with
the policies or procedures may deteriorate.

A deficiency in internal control over financial reporting exists
when the design or operation of a control does not allow
management or employees, in the normal course of performing
their assigned functions, to prevent or detect misstatements on a
timely basis. A material weakness is a deficiency, or a
combination of deficiencies, in internal control over financial
reporting, such that there is a reasonable possibility that a
material misstatement of the fund's annual or interim financial
statements will not be prevented or detected on a timely basis.

Our consideration of the Fund's internal control over financial
reporting was for the limited purpose described in the first
paragraph and would not necessarily disclose all deficiencies in
internal control that might be material weaknesses under
standards established by the PCAOB. However, we noted no
deficiencies in the Fund's internal control over financial reporting
and its operation, including controls for safeguarding securities,
that we consider to be a material weakness, as defined above, as
of December 31, 2018.

This report is intended solely for the information and use of
management of the Fund and the Trustees of Eaton Vance
Special Investment Trust and the Securities and Exchange
Commission and is not intended to be and should not be used by
anyone other than these specified parties.

/s/ Deloitte & Touche LLP

Boston, Massachusetts
February 22, 2019