Fred Ross (1910 – 1992) was an American community organizer. He founded the Community Service Organization (CSO) in 1948, which, with the support of the Industrial Areas Foundation, organized Mexican Americans in California. The CSO in San Jose, CA gave a young Cesar Chavez his first training in organizing, which he would later use in founding the United Farm Workers. Ross also trained the young Dolores Huerta in community organizing.
Ross worked with Edward Roybal and other Mexican-Americans to form the CSO in East Los Angeles, and Roybal became its first President. This chapter of the CSO became politically active and help to elect Roybal to the City Council of Los Angeles in 1949, the first Mexican-American to serve as such since the 19th century.