The 2018–19 Oklahoma Sooners basketball team represented the University of Oklahoma in the 2018–19 NCAA Division I men's basketball season.

They were led by eighth-year head coach Lon Kruger and played their home games at the Lloyd Noble Center in Norman, Oklahoma as a member of the Big 12 Conference.

They lost in the First Round of the Big 12 tournament to West Virginia.

They lost in the First Round of the Big 12 tournament to Oklahoma State.

They received an at-large bid to the NCAA tournament where they lost in the First Round to Rhode Island.