1899–1900 Challenge Cup
| Duration | 6 Rounds |
|---|---|
| Number of teams | 62 |
| Highest attendance | 17,864 |
| Winners | Swinton |
| Runners-up | Salford |
The 1900 Challenge Cup was the 4th staging of rugby league's oldest knockout competition, the Challenge Cup.
The final was contested by Swinton and Salford at Fallowfield Stadium in Manchester on Saturday 28 April 1900. Swinton won 16–8 in front of a crowd of 17,864. The cup was presented by Mrs Smith, wife of the President of the Northern Union.