<SEC-DOCUMENT>0001282637-23-000011-index.html : 20230531
<SEC-HEADER>0001282637-23-000011.hdr.sgml : 20230531
<ACCEPTANCE-DATETIME>20230531105554
ACCESSION NUMBER:		0001282637-23-000011
CONFORMED SUBMISSION TYPE:	11-K
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20221231
FILED AS OF DATE:		20230531
DATE AS OF CHANGE:		20230531

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			NEWMARKET CORP
		CENTRAL INDEX KEY:			0001282637
		STANDARD INDUSTRIAL CLASSIFICATION:	INDUSTRIAL ORGANIC CHEMICALS [2860]
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			VA
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		11-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-32190
		FILM NUMBER:		23979485

	BUSINESS ADDRESS:	
		STREET 1:		330 S FOURTH ST
		STREET 2:		PO BOX 2189
		CITY:			RICHMOND
		STATE:			VA
		ZIP:			23218-2189
		BUSINESS PHONE:		804-788-5000

	MAIL ADDRESS:	
		STREET 1:		330 S FOURTH ST
		STREET 2:		PO BOX 2189
		CITY:			RICHMOND
		STATE:			VA
		ZIP:			23218-2189
</SEC-HEADER>
<DOCUMENT>
<TYPE>11-K
<SEQUENCE>1
<FILENAME>neu12312211k.htm
<DESCRIPTION>FORM 11-K
<TEXT>
Document 1 - file: neu12312211k.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23
<SEQUENCE>2
<FILENAME>neu12312211kex23.htm
<DESCRIPTION>EXHIBIT 23
<TEXT>
Document 2 - file: neu12312211kex23.htm

</DOCUMENT>
</SEC-DOCUMENT>