Exhibit 23.3

DEGOLYER AND MACNAUGHTON

5001 SPRING VALLEY ROAD

SUITE 800 EAST

DALLAS, TEXAS 75244

June 3, 2013

Approach Resources Inc.

One Ridgmar Centre

6500 West Freeway, Suite 800

Fort Worth, Texas 76116

Ladies and Gentlemen:

We hereby consent to the incorporation by reference in this Post-Effective Amendment No. 1 to the Registration Statement (No. 333-174318) on Form S-3ASR of Approach Resources Inc. (“Approach”) to be filed on or about June 3, 2013, of all references to our firm and information from our letter report dated February 18, 2013, included in or made a part of the Annual Report on Form 10-K of Approach for the year ended December 31, 2012. We also consent to the reference to us under the heading “Experts” in such Registration Statement.

Very truly yours,

/s/ DeGolyer and MacNaughton

DEGOLYER AND MACNAUGHTON

Texas Registered Engineering Firm F-716