The 2018–19 Wyoming Cowboys basketball team represented the University of Wyoming during the 2018–19 NCAA Division I men's basketball season. They were led by Allen Edwards in his third year as head coach at Wyoming. The Cowboys played their home games at the Arena-Auditorium in Laramie, Wyoming as members of the Mountain West Conference. They finished the season 8–24, 4–14 in Mountain West play to finish in tenth place. They lost in the first round of the Mountain West tournament to New Mexico.