Exhibit 23.01

Consent of Independent Registered Public Accounting Firm

The Board of Directors

Heidrick & Struggles International, Inc.:

We consent to the incorporation by reference in the registration statements (No. 333-147476, No. 333-130143, No. 333-82424, No. 333-58118, No. 333-32544, and No. 333-73443) on Form S-8 of Heidrick & Struggles International, Inc. of our report dated February 27, 2009, with respect to the consolidated balance sheets of Heidrick & Struggles International, Inc. (the Company) and subsidiaries as of December 31, 2008 and 2007, and the related consolidated statements of operations, stockholders’ equity and comprehensive income, and cash flows for each of the years in the three-year period ended December 31, 2008 and the effectiveness of internal control over financial reporting as of December 31, 2008, which report appears in the December 31, 2008 annual report on Form 10-K of Heidrick & Struggles International, Inc.

Our report dated February 27, 2009 notes that the Company adopted the provisions of Statement of Financial Accounting Standard (SFAS) No. 158, Employers’ Accounting for Defined Benefit Pension and Other Postretirement Plans—an amendment of FASB No. 87, 88, 106 , and 132(R), on December 31, 2006, Financial Accounting Standards Board Interpretation No. 48, Accounting for Uncertainty in Income Taxes—an interpretation of FASB Statement 109, on January 1, 2007 and SFAS No. 157, Fair Value Measurements, on January 1, 2008.

(Signed)    KPMG LLP

Chicago, Illinois

February 27, 2009