The University of Arizona (Arizona, U of A, UArizona, or UA) is a public research university in Tucson, Arizona. Founded in 1885, the UofA was the first university in the Arizona Territory. As of 2019, the university enrolled 45,918 students[6] in 19 separate colleges/schools, including the University of Arizona College of Medicine in Tucson and Phoenix and the James E. Rogers College of Law, and is affiliated with two academic medical centers (Banner - University Medical Center Tucson and Banner - University Medical Center Phoenix). The University of Arizona is governed by the Arizona Board of Regents. The University of Arizona is one of the elected members of the Association of American Universities and is the only representative from the state of Arizona to this group.

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Known as the Arizona Wildcats (often shortened to "Cats"), the UA's intercollegiate athletic teams are members of the Pac-12 Conference of the NCAA. UA athletes have won national titles in several sports, most notably men's basketball, baseball, and softball. The official colors of the university and its athletic teams are cardinal red and navy blue.