Exhibit 5.1

	300 PEACH STREET (71730) POST OFFICE BOX 7000  EL DORADO, ARKANSAS 71731-7000
WALTER K. COMPTON EXECUTIVE VICE PRESIDENT  & GENERAL COUNSEL	DIRECT DIAL (870) 864-6555 LAW DEPT. FAX (870) 864-6221  WALTER_COMPTON@MURPHYOILCORP.COM

August 1, 2018

Murphy Oil Corporation

300 Peach Street 

P.O. Box 7000

El Dorado, Arkansas 71731-7000

Re: Murphy Oil Corporation 2018 Long-Term Incentive Plan and Murphy Oil Corporation 2018 Stock Plan for Non-Employee Directors

Ladies and Gentlemen:

As Executive Vice President and General Counsel of Murphy Oil Corporation, (the “Company”), I advise you as follows in connection with the filing by the Company of a registration statement on Form S-8 under the Securities Act of 1933, as amended, with respect to 7,250,000 shares of common stock, $1.00 par value per share (“Common Stock”) issuable pursuant to the Murphy Oil Corporation 2018 Long-Term Incentive Plan (6,750,000 shares) and the Murphy Oil Corporation 2018 Stock Plan for Non-Employee Directors (500,000 shares) (collectively, the “Plans”).

As Executive Vice President and General Counsel for the Company, I, or attorneys under my supervision, have participated in the preparation of the Registration Statement and have examined and relied upon such documents, opinions, precedents, records and other materials as I have deemed necessary or appropriate to provide a basis for the opinion set forth below. In this examination, I have assumed the genuineness of all signatures, the authenticity of all documents submitted to me as original documents and conformity to original documents of all documents submitted to me as certified or photostatic copies.

Based on the foregoing, I am of the opinion that shares of original issuance Common Stock deliverable pursuant to the Plans, when delivered in accordance with the applicable Plan upon receipt by the Company of adequate consideration therefor, will be duly authorized, validly issued, fully paid and nonassessable.

I hereby consent to the filing of this opinion with the Securities and Exchange Commission as an exhibit to the Registration Statement.

Sincerely,

/s/ Walter K. Compton

Walter K. Compton

Executive Vice President and General Counsel