<SEC-DOCUMENT>0000011544-21-000040-index.html : 20210629
<SEC-HEADER>0000011544-21-000040.hdr.sgml : 20210629
<ACCEPTANCE-DATETIME>20210629172103
ACCESSION NUMBER:		0000011544-21-000040
CONFORMED SUBMISSION TYPE:	11-K
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20201231
FILED AS OF DATE:		20210629
DATE AS OF CHANGE:		20210629

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			BERKLEY W R CORP
		CENTRAL INDEX KEY:			0000011544
		STANDARD INDUSTRIAL CLASSIFICATION:	FIRE, MARINE & CASUALTY INSURANCE [6331]
		IRS NUMBER:				221867895
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		11-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-15202
		FILM NUMBER:		211059213

	BUSINESS ADDRESS:	
		STREET 1:		475 STEAMBOAT ROAD
		STREET 2:		.
		CITY:			GREENWICH
		STATE:			CT
		ZIP:			06830
		BUSINESS PHONE:		2036293000

	MAIL ADDRESS:	
		STREET 1:		475 STEAMBOAT ROAD
		STREET 2:		.
		CITY:			GREENWICH
		STATE:			CT
		ZIP:			06830
</SEC-HEADER>
<DOCUMENT>
<TYPE>11-K
<SEQUENCE>1
<FILENAME>wrb11-k2020.htm
<DESCRIPTION>11-K
<TEXT>
Document 1 - file: wrb11-k2020.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23
<SEQUENCE>2
<FILENAME>wrb11-k2020exhibit23.htm
<DESCRIPTION>EX-23
<TEXT>
Document 2 - file: wrb11-k2020exhibit23.htm

</DOCUMENT>
</SEC-DOCUMENT>