The 1990 Western Athletic Conference Men's Basketball Tournament was held March 7–10 at the Special Events Center at the University of Texas at El Paso in El Paso, Texas. UTEP defeated Hawaii in the championship game, 75–58, to clinch their fourth overall, and second consecutive, WAC men's tournament championship The Miners, in turn, received an automatic bid to the 1990 NCAA Tournament. They were joined in the tournament by the WAC regular season co-champions Colorado State and BYU, who both earned at-large bids (both teams lost their WAC quarterfinal games to lower seeds).