The 2023–24 Oklahoma State Cowboys basketball team represented Oklahoma State University during the 2023–24 NCAA Division I men's basketball season.

The team was led by seventh-year head coach Mike Boynton, and played its home games at Gallagher-Iba Arena in Stillwater, Oklahoma as a member of the Big 12 Conference.

The Cowboys finished the 2022–23 season 17–14, 8–10 in Big 12 play to finish in seventh place.

They defeated Oklahoma in the first round of the Big 12 tournament before losing in the quarterfinals to Texas.

They were invited to the National Invitation Tournament where they defeated Youngstown State and Eastern Washington before losing in overtime in the quarterfinals to North Texas.