The 2004 London Broncos season was the twenty-fifth in the club's history and their ninth season in the Super League.

The club was coached by Tony Rea, competing in Super League IX and finishing in 10th place.

The club also got to the fifth round of the Challenge Cup.

Competition points: for win = 2; for draw = 1; for loss = 0.

For the fifth consecutive year, the Broncos were knocked out of the cup at the fifth round stage.