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    ACCESSION NUMBER:		0001564590-21-022984
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		15
    CONFORMED PERIOD OF REPORT:	20210504
    ITEM INFORMATION:		Results of Operations and Financial Condition
    ITEM INFORMATION:		Regulation FD Disclosure
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20210504
    DATE AS OF CHANGE:		20210504

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			MARTIN MARIETTA MATERIALS INC
    		CENTRAL INDEX KEY:			0000916076
    		STANDARD INDUSTRIAL CLASSIFICATION:	MINING, QUARRYING OF NONMETALLIC MINERALS (NO FUELS) [1400]
    		IRS NUMBER:				561848578
    		STATE OF INCORPORATION:			NC
    		FISCAL YEAR END:			1231

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    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-12744
    		FILM NUMBER:		21885948

    	BUSINESS ADDRESS:
    		STREET 1:		2710 WYCLIFF ROAD
    		CITY:			RALEIGH
    		STATE:			NC
    		ZIP:			27607
    		BUSINESS PHONE:		919-781-4550

    	MAIL ADDRESS:
    		STREET 1:		2710 WYCLIFF ROAD
    		CITY:			RALEIGH
    		STATE:			NC
    		ZIP:			27607
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