Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the use in this Registration Statement No. 333-286310 on Form S-1 of our report dated March 31, 2025, relating to the financial statements of Circle Internet Group, Inc. We also consent to the reference to us under the heading “Experts” in such Registration Statement.

/s/ Deloitte & Touche LLP

New York, New York

May 27, 2025