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                                                                   EXHIBIT 23.01




               CONSENT OF ERNST & YOUNG LLP, INDEPENDENT AUDITORS



We consent to the incorporation by reference in this Annual Report (Form 10-K)
of Martin Marietta Materials, Inc., of our report dated January 22, 2001, except
for Note M, as to which the date is February 23, 2001, included in the 2000
Annual Report to Shareholders of Martin Marietta Materials, Inc. and
subsidiaries.

Our audit also included the financial statement schedule of Martin Marietta
Materials, Inc. and subsidiaries listed in Item 14(a). This schedule is the
responsibility of the Corporation's management. Our responsibility is to express
an opinion based on our audits. In our opinion, the financial statement schedule
referred to above, when considered in relation to the basic financial statements
taken as a whole, presents fairly in all material respects the information set
forth therein.

We also consent to the incorporation by reference in the Registration Statement
(Form S-8 No. 33-83516) pertaining to the Martin Marietta Materials, Inc.
Omnibus Securities Award Plan, as amended; in the Registration Statement (Form
S-8 No. 333-15429) pertaining to the Martin Marietta Materials, Inc. Common
Stock Purchase Plan for Directors, Martin Marietta Materials, Inc. Performance
Sharing Plan and the Martin Marietta Materials, Inc. Savings and Investment Plan
for Hourly Employees; in the Registration Statement (Form S-8 No. 333-79039)
pertaining to the Martin Marietta Materials, Inc. Stock-Based Award Plan, as
amended; and in the Registration Statement (Form S-8 No. 333-37886) pertaining
to the Martin Marietta Materials, Inc. Southwest Division 401(k) Plan, of our
report dated January 22, 2001, except Note M, as to which the date is February
23, 2001, with respect to the consolidated financial statements incorporated
herein by reference, and our report included in the preceding paragraph with
respect to the financial statement schedule included in this Annual Report (Form
10-K) of Martin Marietta Materials, Inc., for the year ended December 31, 2000.





                                    ERNST & YOUNG LLP

Raleigh, North Carolina
March 21, 2001


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