Harbor College is a member of the South Coast Conference of the California Association of Community Colleges in all intercollegiate sports except football. The South Coast Conference comprises Cerritos, Compton, El Camino, Harbor, Long Beach, East Los Angeles, Los Angeles Southwest, Los Angeles Trade-Technical, Mt. San Antonio and Pasadena colleges. The South Coast Conference is recognized as one of the finest and most competitive in the state.
In football, Harbor College is a member of the Central Conference along with Chaffey, Citrus, El Camino, Long Beach City, Mt. San Antonio and Riverside colleges.
Harbor College sponsors women’s teams in basketball, soccer, softball and volleyball, and men’s teams in baseball, basketball, football and soccer.
The baseball team has won three state championships, the men's and women's basketball teams have each won two state titles, and the football team has won five bowl games. Harbor College has won the Team State Scholar Award in soccer and baseball.