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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 25, 1999,
included in the 1998 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-3 No. 33-99082)
pertaining to the Martin Marietta Materials, Inc. shelf registration; and in the
Registration Statement (Form S-4 No. 333-71793) pertaining to Martin Marietta
Materials, Inc.'s registration of $200,000,000 of Notes of our report dated
January 25, 1999, 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, 1998.


                                                ERNST & YOUNG LLP


Raleigh, North Carolina
March 24, 1999


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