Carol Ann Alt (born December 1, 1960) is an American model and actress.

Alt’s first big break in modeling was in 1979, when she was featured on the cover of Harper’s Bazaar magazine, but garnered publicity in 1982 when she was featured on the cover of the Sports Illustrated Swimsuit Issue. During the 1980s she appeared on over 500 magazine covers, becoming one of the most famous models of her era, attaining supermodel status. Alt graced the covers of Vogue, Vogue Paris, Vogue Italia, Vogue UK, Mademoiselle, Elle and Cosmopolitan. She was referred to as The Face by Life Magazine. During the height of her popularity, she was the face of ad campaigns for Diet Pepsi, General Motors, Cover Girl Cosmetics, Noxzema, Hanes, Givenchy and numerous others. She was the first model to produce her own posters and calendars.