Peterson Gymnasium is a 3,668 seat multi-purpose arena in San Diego, California on the campus of San Diego State University. The gym opened in 1961. It was home to the San Diego State University Aztecs basketball teams until Cox Arena (now known as the Viejas Arena) opened in 1997. The facility is named after C.E. Peterson, who during his 37-year career at San Diego State University served as athletic director, football coach, track coach, basketball coach, Dean of Men and alumni executive secretary. Peterson Gym is currently the home of the San Diego State Aztecs women's volleyball team.

In 1972–73, Peterson Gym was home of the American Basketball Association (ABA)'s San Diego Conquistadors. The Conquistadors were coached by Naismith Basketball Hall of Fame inductee and Boston Celtics great K.C. Jones. The team finished with a 30–54 record. Following the season, the team switched its home arena to the San Diego Sports Arena.

The gym hosted the 1973 NCAA Men's Volleyball Tournament, where the San Diego State Aztecs men's volleyball team won the university's first (and to-date only) NCAA Division I National Championship in any sport.

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