2005 West Coast Conference men's basketball tournament

The 2005 West Coast Conference men's basketball tournament took place March 4–7, 2005. All rounds were held in Santa Clara, California at the Leavey Center. The semifinals were televised by ESPN2. The West Coast Conference Championship Game was televised by ESPN.

The Gonzaga Bulldogs earned their seventh WCC Tournament title and an automatic bid to the 2005 NCAA tournament. Adam Morrison of Gonzaga was named Tournament MVP.