Pacific-10 Conference
Data
Established	1959
Members	10
Sports fielded	22 (11 men's, 11 women's)
NCAA Championships	360
Region	West Coast of the United States
States	4 (Arizona, California, Oregon, Washington)
Past names	Athletic Association of Western Universities, Big Five, Big Six, (1959-68) Pacific-8 Conference (1968-78)
Headquarters	Walnut Creek, California
Locations

The Pacific-10 Conference (Pac-10) is a college athletic conference which operates in the western United States. It participates in the NCAA's Division I; its football teams compete in the Football Bowl Subdivision (FBS; formerly Division I-A), the higher of two levels of NCAA Division I football competition. The conference's ten members compete in 22 NCAA sports. It was founded as the Athletic Association of Western Universities or AAWU in 1959, and went by the names Big Five, Big Six, and Pacific 8 before becoming the Pacific 10 in 1978.