The 2003 Challenge Cup was sponsored by Powergen and was held during the 2002–03 season.

The final was held on Saturday 26 April 2003, at Millennium Stadium, Cardiff, UK.

The game was won by Bradford Bulls who defeated Leeds Rhinos.

[citation needed] BBC Sport had live rights to the tournament in the United Kingdom from the fourth round onwards.

The matches shown live on the BBC were: Wakefield Trinity Wildcats 20–18 Castleford Tigers and Warrington Wolves 12-38 Bradford Bulls (R4); Leeds Rhinos 21–12 London Broncos and Wakefield Trinity Wildcats 12–22 Widnes Vikings (R5); Widnes Vikings 28–38 Bradford Bulls and Leeds Rhinos 41–18 Hull (QF); Leeds Rhinos 33–26 St Helens and Wigan Warriors 22–36 Bradford Bulls (SF); and Bradford Bulls 22–20 Leeds Rhinos (Final).