The regular season ran from October 3, 2004 to May 2005, 18 teams played 34 games each.

The top 8 teams made the play-offs whilst the lowest ranked team, Sicc Cucine Jesi and the bankrupt club Scavolini Pesaro, were relegated to the Legadue.

Climamio Bologna won their second title by winning the playoff finals series against Armani Jeans Milano.

Scavolini Pesaro has gone bankrupt after the season and moved to Serie B, sparing Reggio Calabria relegation.

Quarterfinals Semifinals Finals Statistics are for the regular season.