The 2004–05 season was the 127th season in Bolton Wanderers F.C.'s existence, and was their fourth consecutive year in the top-flight. This article covers the period from 1 July 2004 to 30 June 2005.

Bolton finished in sixth place in the final Premiership table - tied on points but one place behind that season's European champions Liverpool, and three points off qualification for the Champions League. As it was, sixth place was enough to grant Bolton their first ever excursion into European competition, in the UEFA Cup.

Note: Flags indicate national team as defined under FIFA eligibility rules. Players may hold more than one non-FIFA nationality.

Bolton used a total of 26 players during the season.

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