1999 West Coast Conference men's basketball tournament

The 1999 West Coast Conference men's basketball tournament took place on February 27–March 1, 1999. All rounds were held in Santa Clara, California at the Toso Pavilion.

The Gonzaga Bulldogs won the WCC Tournament title and an automatic bid to the 1999 NCAA tournament. Matt Santangelo of Gonzaga was named Tournament MVP.

Format
With eight teams participating, all eight teams were placed into the first round, with teams seeded and paired based on regular-season records. After the first round, teams were re-seeded so the highest-remaining team was paired with the lowest-remaining time in one semifinal with the other two teams slotted into the other semifinal.