The 2017–18 Arizona Wildcats men's basketball team represented the University of Arizona during the 2017–18 NCAA Division I men's basketball season. The team was led by ninth-year head coach Sean Miller, and played their home games at McKale Center in Tucson, Arizona as members in the Pac-12 Conference. They finished the season 27–8, 14–4 in Pac-12 play to win the regular season championship. They defeated Colorado, UCLA, and USC to win the Pac-12 tournament. As a result, they received the conference's automatic bid to the NCAA tournament where, as a No. 4 seed, they were upset in the first round by No. 13 seed Buffalo.

Sean Edward Miller is an American college basketball coach who currently serves as head coach of the Xavier Musketeers. He previously held that position from 2004 to 2009, after which he took the head coach position at the Arizona Wildcats, which he held until being fired in 2021.