Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in Registration Statement No. 333-50543 and 333-142623 of Kforce Inc. on Form S-8 of our report dated June 25, 2021 relating to the financial statements and supplemental schedules of the Kforce 401(k) Retirement Savings Plan as of December 31, 2020 and 2019 and for the year ended December 31, 2020, appearing in this Annual Report on Form 11-K of the Kforce 401(k) Retirement Savings Plan for the year ended December 31, 2020.

/s/ Warren Averett, LLC

Tampa, Florida

June 25, 2021