Specialized Disclosure Report (sd)

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM SD

SPECIALIZED DISCLOSURE REPORT

Markel Corporation

(Exact name of registrant as specified in its charter)

	Virginia	001-15811	54-1959284
(State or other jurisdiction of Incorporation or organization)		(Commission File Number)	(IRS Employer Identification No.)

        

4521 Highwoods Parkway Glen Allen,Virginia	23060-6148
(Address of principal executive offices)	(Zip Code)

Thomas S. Gayner, Co-Chief Executive Officer

[phone]

_________________________________________________________________________

(Name and telephone number, including area code, of the

person to contact in connection with this report.)

Check the appropriate box to indicate the rule pursuant to which this form is being filed, and provide the period to which the information in this form applies:

_ x_	Rule 13p-1 under the Securities Exchange Act (17 CFR 240.13p-1) for the reporting period from January 1 to December 31, 2017.

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Section 1 - Conflict Minerals Disclosure

Item 1.01 Conflict Minerals Disclosure and Report

As required by the Conflict Minerals Rule, a Conflict Minerals Report is provided as an Exhibit to this Form SD and is available at the following Internet website: https://www.markelcorp.com/conflictminerals. The information contained on our website is not incorporated by reference into this Form SD or our Conflict Minerals Report and should not be considered part of this report or the Conflict Minerals Report.

Item 1.02 Exhibit

The Conflict Minerals Report required by Item 1.01 is filed as Exhibit 1.01 to this Form SD.

Section 2 - Exhibits

Item 2.01 Exhibits

Exhibit 1.01 - Conflict Minerals Report as required by Items 1.01 and 1.02 of this Form.

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the duly authorized undersigned.

Markel Corporation
(Registrant)
By: /s/ Thomas S. Gayner	May 30, 2018
Name: Thomas S. Gayner Title: Co-Chief Executive Officer