<SEC-DOCUMENT>0000950170-22-012110-index.html : 20220624
<SEC-HEADER>0000950170-22-012110.hdr.sgml : 20220624
<ACCEPTANCE-DATETIME>20220624150620
ACCESSION NUMBER:		0000950170-22-012110
CONFORMED SUBMISSION TYPE:	11-K
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20211231
FILED AS OF DATE:		20220624
DATE AS OF CHANGE:		20220624

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

	FILING VALUES:
		FORM TYPE:		11-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-12744
		FILM NUMBER:		221039686

	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
</SEC-HEADER>
<DOCUMENT>
<TYPE>11-K
<SEQUENCE>1
<FILENAME>mlm_-_11k_-_20211231.htm
<DESCRIPTION>11-K
<TEXT>
Document 1 - file: mlm_-_11k_-_20211231.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23.01
<SEQUENCE>2
<FILENAME>mlm-ex23_01.htm
<DESCRIPTION>EX-23.01
<TEXT>
Document 2 - file: mlm-ex23_01.htm

</DOCUMENT>
</SEC-DOCUMENT>