The 2003–04 Denver Pioneers men's ice hockey season was the 55th season of play for the program and 45th in the WCHA. The Pioneers represented the University of Denver in the 2003–04 NCAA Division I men's ice hockey season, played their home games at Magness Arena and were coached by George Gwozdecky, in his 10th season. The team won the 2004 NCAA Division I men's ice hockey tournament, the 6th title in program history.