The 2018–19 Western Athletic Conference men's basketball season began with practices in September 2018 and ended with the 2019 WAC men's basketball tournament March 2019 at the Orleans Arena in Las Vegas, NV.

The season marks 56th season of Western Athletic Conference.

The WAC conducted a media teleconference on October 10, 2018 and released the media and coaches poll, as well as the preseason All-WAC teams and player of the year.

[1] [2] First Team Second Team Player of the Year [3] [4] First Team Second Team Player of the Year [5] This table summarizes the head-to-head results between teams in conference play.

(x) indicates games remaining this season.