The 2025–26 Oregon State Beavers men's basketball team represents Oregon State University during the 2025–26 NCAA Division I men's basketball season. The Beavers, led by twelve-year head coach Wayne Tinkle, play their home games at Gill Coliseum in Corvallis, Oregon as a member of the West Coast Conference. This will mark the second and final year of Oregon State's affiliate membership with the West Coast Conference before transitioning back to the reformed Pac-12 Conference on July 1, 2026.