The UC Santa Barbara Gauchos are the intercollegiate athletic teams who represent the University of California, Santa Barbara. Referred to in athletic competition as UC Santa Barbara or UCSB, the Gauchos participate in 19 NCAA Division I intercollegiate sports with the majority competing in the Big West Conference. UCSB currently fields varsity teams in 10 men's sports and 9 women's sports.

The University of California, Santa Barbara is a public land-grant research university in Santa Barbara County, California, United States. It is part of the University of California university system. Tracing its roots back to 1891 as an independent teachers' college, UCSB joined the ancestor of the California State University system in 1909 and then moved over to the University of California system in 1944. It is the third-oldest undergraduate campus in the system, after UC Berkeley and UCLA. Total student enrollment for 2022 was 23,460 undergraduate and 2,961 graduate students.