<SEC-DOCUMENT>0001564590-19-023053-index.html : 20190621
<SEC-HEADER>0001564590-19-023053.hdr.sgml : 20190621
<ACCEPTANCE-DATETIME>20190621134616
ACCESSION NUMBER:		0001564590-19-023053
CONFORMED SUBMISSION TYPE:	11-K
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20181231
FILED AS OF DATE:		20190621
DATE AS OF CHANGE:		20190621

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:		19910961

	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_20181231.htm
<DESCRIPTION>11-K
<TEXT>
Document 1 - file: mlm-11k_20181231.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23.01
<SEQUENCE>2
<FILENAME>mlm-ex2301_6.htm
<DESCRIPTION>EX-23.01
<TEXT>
Document 2 - file: mlm-ex2301_6.htm

</DOCUMENT>
</SEC-DOCUMENT>