Exhibit 23.1

Consent of Independent Registered Public Accounting Firm

The Board of Directors

Digimarc Corporation:

We consent to the incorporation by reference in the registration statement (No. 333-154524) on Form S-8 of Digimarc Corporation of our reports dated February 21, 2014, with respect to the consolidated balance sheets of Digimarc Corporation and subsidiaries as of December 31, 2013 and 2012, and the related consolidated statements of operations, shareholders’ equity, and cash flows, for each of the years in the three-year period ended December 31, 2013, and the effectiveness of internal control over financial reporting as of December 31, 2013, which reports appear in the December 31, 2013 annual report on Form 10-K of Digimarc Corporation.

/s/ KPMG LLP

Portland, Oregon

February 21, 2014