Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in Registration Statement Nos. 333-253511 and 333-253513 on Form S-3 and Registration Statement No. 333-232902 on Form S-8 of our reports dated February 28, 2022, relating to the financial statements of Groupon, Inc. and subsidiaries (the “Company”), and the effectiveness of the Company’s internal control over financial reporting appearing in this Annual Report on Form 10-K for the year ended December 31, 2021.

/s/ Deloitte & Touche LLP

Chicago, Illinois

February 28, 2022