Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the incorporation by reference in this Registration Statement on Form S-8 of our report dated March 16, 2017 relating to the financial statements, and the effectiveness of internal control over financial reporting, which appears in NN, Inc’s Annual Report on Form 10-K for the year ended December 31, 2016.

/s/ PricewaterhouseCoopers LLP

Charlotte, NC

March 16, 2017