1989–90 Oklahoma Sooners men's basketball team

The 1989–90 Oklahoma Sooners men's basketball team represented the University of Oklahoma in competitive college basketball during the 1989–90 NCAA Division I season. The Oklahoma Sooners men's basketball team played its home games in the Lloyd Noble Center and was a member of the National Collegiate Athletic Association's (NCAA) former Big Eight Conference at that time. The team posted a 27–5 overall record and an 11–3 conference record to finish tied for second in the Conference for head coach Billy Tubbs. This was the third Big Eight Conference Tournament Championship for Tubbs and his third NCAA Men's Division I Basketball Tournament #1 seed in a row. The team earned the conference tournament championship competing in a conference in which three teams held the #1 national ranking in consecutive weeks in late February and early March.

The team was led by All-Big Eight Conference First Team selection Skeeter Henry. The team won its first twelve games, while rising to the #3 ranking, before losing back to back road games to unranked Kansas State and #23 Arizona. The team then won three consecutive home games before losing to #2 Kansas on the road. It then won four games before losing to #2 Missouri. The team then won 8 contests in a row including back to back victories over #1 ranked teams (Missouri and Kansas) at the end of February as well as a rubber match victory against Kansas in the Big Eight Conference Tournament semifinals. The team earned the school's third consecutive #1 seed in the 1989 NCAA Men's Division I Basketball Tournament, but was eliminated in the second round by North Carolina 79–77.