N-CSR/A

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM N-CSR/A

CERTIFIED SHAREHOLDER REPORT OF REGISTERED MANAGEMENT

INVESTMENT COMPANIES

Investment Company Act file number:	811-05336
Exact name of registrant as specified in charter:	Prudential Institutional
	Liquidity Portfolio, Inc.
Address of principal executive offices:	Gateway Center 3,
	100 Mulberry Street,
	Newark, New Jersey 07102
Name and address of agent for service:	Deborah A. Docs
	Gateway Center 3,
	100 Mulberry Street,
	Newark, New Jersey 07102
Registrant’s telephone number, including area code:	973-367-7521
Date of fiscal year end:	3/31/2005
Date of reporting period:	3/31/2005

Explanatory Note

This filing is an amendment to the registrant’s original Certified Shareholder Report on Form N-CSR filed by the registrant on May 27, 2005, relating to its fiscal year ended March 31, 2005. The registrant hereby amends its original report by submitting revised certifications required by Section 302 of the Sarbanes-Oxley Act, filed herewith as EX-99.CERT. The revised certifications include certain representations with respect to internal control over financial reporting that had been inadvertently omitted from the certifications submitted with the registrant’s original report because of the use of a previously authorized, but superseded, form of certification.

This amendment does not reflect events occurring after the filing of the registrant’s original report, and, other than amend the certifications required by Section 302 of the Sarbanes-Oxley Act, does not modify or update the disclosure in the report in any way.

Item 12. Exhibits

(a) (2) Certifications pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. Filed herewith.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

(Registrant) Prudential Institutional Liquidity Portfolio, Inc.
By (Signature and Title)*	/s/ Deborah A. Docs
	Deborah A. Docs
	Secretary
Date November 21, 2005
Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.
By (Signature and Title)*	/s/ Judy A. Rice
	Judy A. Rice
	President and Principal Executive Officer
Date November 21, 2005
By (Signature and Title)*	/s/ Jack Benintende
	Jack Benintende
	Acting Treasurer and Principal Financial Officer
Date November 21, 2005

* Print the name and title of each signing officer under his or her signature.

EX-99.CERT

Item 12

Prudential Institutional Liquidity Portfolio, Inc.

Annual period ending 03/31/05

File No. 811-5336

CERTIFICATIONS

I, Judy A. Rice, certify that:

1. I have reviewed this report on Form N-CSR of Prudential Institutional Liquidity Portfolio, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations, changes in net assets, and cash flows (if the financial statements are required to include a statement of cash flows) of the registrant as of, and for, the periods presented in this report.

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940) and internal control over financial reporting (as defined in Rule 30a-3(d) under the Investment Company Act of 1940) for the registrant and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under the under our supervision, 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;

c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of a date within 90 days prior to the filing date of this report based on such evaluation; and;

d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal half-year (the registrant’s second fiscal half-year in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officers and I have disclosed to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal controls which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize, and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: November 21, 2005

/s/ Judy A. Rice

Judy A. Rice

President and Principal Executive Officer

Item 12

Prudential Institutional Liquidity Portfolio, Inc.

Annual period ending 03/31/05

File No. 811-5336

CERTIFICATIONS

I, Jack Benintende, certify that:

1. I have reviewed this report on Form N-CSR of Prudential Institutional Liquidity Portfolio, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations, changes in net assets, and cash flows (if the financial statements are required to include a statement of cash flows) of the registrant as of, and for, the periods presented in this report.

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940) and internal control over financial reporting (as defined in Rule 30a-3(d) under the Investment Company Act of 1940) for the registrant and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under the under our supervision, 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;

c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of a date within 90 days prior to the filing date of this report based on such evaluation; and;

d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal half-year (the registrant’s second fiscal half-year in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officers and I have disclosed to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal controls which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize, and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: November 21, 2005

/s/ Jack Benintende

Jack Benintende

Acting Treasurer and Chief Financial Officer