The 2017–18 Pac-12 Conference men's basketball season began with practices in October 2017 followed by the 2017–18 NCAA Division I men's basketball season on November 10, 2017. The conference schedule began on December 29, 2017. The season was the seventh season under the Pac–12 Conference name and the 59th since the conference was established under its current charter as the Athletic Association of Western Universities in 1959. Including the history of the Pacific Coast Conference, which operated from 1915 to 1959 and is considered by the Pac-12 as a part of its own history, this was the Pac-12's 103rd season of basketball.