The California Alumni Club of the Peninsula is an alumni organization whose primary focus is supporting local scholars by providing scholarships. In addition, the club provides the opportunity to join fellow Cal alums at various events and gatherings throughout the year.

Prior to 1950, the California Alumni Club of the Peninsula (CACP) existed as a network of communities formed by San Mateo County alumni who met informally during the 1930's and 40's for dinner meetings and scholarship programs. CACP incorporated in 1958 as a non-profit organization, and in 1975, was recognized as a Chartered Club of the California Alumni Association.