2004–05 OHL season

2004–05 OHL season
LeagueOntario Hockey League
SportHockey
DurationRegular season
Sept. 2004 – March 2005
Playoffs
March 2005 – May 2005
Number of teams20
TV partner(s)Rogers TV, TVCogeco
Finals championsLondon Knights
2004–05 CHL season
LeagueCanadian Hockey League
SportHockey
DurationOHL
Sept. 2004 – March 2005
QMJHL
Sept. 2004 – March 2005
WHL
Sept. 2004 – March 2005
Number of teams60
TV partner(s)RDS
Rogers Sportsnet
Rogers TV
Shaw TV

The 2004–05 OHL season was the 25th season of the Ontario Hockey League. The OHL inaugurated two awards for scholastic achievement, the Roger Neilson Memorial Award and the Ivan Tennant Memorial Award. Twenty teams each played 68 games. The London Knights set a Canadian Hockey League record, being undefeated in 31 consecutive games (29-0-2) to start the season. On March 11, 2005, the league announced OHL Live Stream, a new streaming service to be developed over a three year period. The J. Ross Robertson Cup was won by the London Knights, defeating the Ottawa 67's.