Tennant (TNC) 10-K 2014 FY Annual report

Exhibit 23.1

Consent of Independent Registered Public Accounting Firm

The Board of Directors

Tennant Company:

We consent to the incorporation by reference in the registration statements (Nos. 333-28641, 333-73706, 333-51531, 333-157708, 333-142581, 333-80589, 333-181203, 333-188151, 333-114884, and 333-166342) on Form S-8 and (No. 333-184655) on Form S-3 of Tennant Company of our report dated February 27, 2015, with respect to the consolidated balance sheets of Tennant Company and subsidiaries as of December 31, 2014 and 2013, and the related consolidated statements of earnings, comprehensive income, cash flows, and shareholders’ equity for each of the years in the three-year period ended December 31, 2014, and the related financial statement schedule, and the effectiveness of internal control over financial reporting as of December 31, 2014, which report appears in the December 31, 2014 annual report on Form 10-K of Tennant Company.

/s/ KPMG LLP

Minneapolis, Minnesota

February 27, 2015