The 1983 Big Eight Conference men's basketball tournament was held March 10–12 at a combination of on-campus gymnasiums and Kemper Arena in Kansas City, Missouri.
[1] Number 3 seed Oklahoma State defeated top-seeded Missouri in the championship game, 93–92 in double overtime, to win their first Big Eight men's basketball tournament.
They were joined in the tournament by fellow Big Eight members Missouri and Oklahoma, who earned at-large bids.
They were seeded based on regular season conference records, with all teams placed and paired in the initial quarterfinal round.
The semifinals and championship game were played at Kemper Arena in Kansas City, Missouri.