EXHIBIT 23

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the incorporation by reference in the Registration Statements on Form S-8 (No. 333-87786, No. 333-140781 and No. 333-186681) and Form S-3 (No. 333-178937 and No. 333-187112) of Atwood Oceanics, Inc. of our report dated November 14, 2013 relating to the consolidated financial statements and the effectiveness of internal control over financial reporting, which appears in this Form 10-K.

/s/ PricewaterhouseCoopers LLP

Houston, Texas

November 14, 2013