Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the incorporation by reference in this Registration Statement on Form S-8 of Kiniksa Pharmaceuticals International, plc of our report dated February 24, 2026 relating to the financial statements and the effectiveness of internal control over financial reporting, which appears in Kiniksa Pharmaceuticals International, plc’s Annual Report on Form 10-K for the year ended December 31, 2025.