1978 Southwest Conference men's basketball tournament

The 1978 Southwest Conference men's basketball tournament was held March 2–4, 1978, at The Summit in Houston, Texas. The first round took place on February 25 at the higher-seeded campus sites.

Number 3 seed Houston defeated 1 seed Texas 92–90 to win their 1st championship and receive the conference's automatic bid to the 1978 NCAA tournament.

Format and seeding
The tournament consisted of 9 teams, seeds 2-8 played in an 8 team single-elimination tournament with the winner playing the top seeded team in the tournament final.