2006 Big West Conference men's basketball tournament

The 2006 Big West Conference men's basketball tournament was held March 8–11 at Anaheim Convention Center in Anaheim, California.

Pacific defeated in the championship game, 78–70, to obtain the fourth Big West Conference men's basketball tournament championship in school history.

The Tigers earned the conference's automatic bid to the 2006 NCAA tournament as the #14 seed in the Minneapolis region.

Format
Eight of the nine teams in the conference participated, with not qualifying. Teams were seeded based on regular season conference records. The top four seeds received byes, with the top two seeds receiving a second bye into the semifinal round.