Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

The Board of Directors

Heidrick & Struggles International, Inc.:

We consent to the use of our report dated March 14, 2012, with respect to the consolidated balance sheets of Heidrick & Struggles International, Inc. and subsidiaries as of December 31, 2011 and 2010, and the related consolidated statements of operations, stockholders’ equity and comprehensive income (loss), and cash flows for each of the years in the three-year period ended December 31, 2011, and the effectiveness of internal control over financial reporting as of December 31, 2011, incorporated herein by reference.

/s/ KPMG LLP

Chicago, Illinois

May 25, 2012