TTM (TTMI) 8-K/A Report of Independent Auditors

Exhibit 23.1

CONSENT OF INDEPENDENT ACCOUNTANTS

We hereby consent to the incorporation by reference in the Registration Statements on FormS-3 (No.333-214592) and FormS-8 (Nos.333-46454,333-138219,333-198117, and333-211744) of TTM Technologies, Inc. of our report dated August 11, 2017 relating to the financial statements of Anaren Inc., which appears in this Current Report on Form8-K.

/s/ PricewaterhouseCoopers LLP

Rochester, New York

June 28, 2018