The 1999–2000 Arizona Wildcats men's basketball team represented the University of Arizona in the 1999–2000 NCAA Division I men's basketball season.

The head coach was Lute Olson.

The team played its home games in the McKale Center in Tucson, Arizona, and was a member of the Pacific-10 Conference.

The Wildcats finished the season in first place in the Pacific-10 conference with a 15–3 record.

[2] Arizona reached the Second Round in the 2000 NCAA Division I men's basketball tournament, losing to Wisconsin 59-66 and finishing the season with a 27–7 record.