1904–05 Challenge Cup

The 1904–05 Challenge Cup was the 9th staging of rugby league's oldest knockout competition, the Challenge Cup.

Warrington, the previous year's beaten finalists, won the Cup at their third attempt.

Final
The final was contested by Warrington and Hull Kingston Rovers at Headingley in Leeds on Saturday 29 April 1905, in front of a crowd of 19,638. Warrington beat Hull KR 6–0.