Phillip L. Isenberg (born February 25, 1939) served in the California State Assembly from 1982 to 1996. He represented the city of Sacramento and surrounding areas. Prior to his service in the Assembly, he was mayor of Sacramento from 1975 until 1982. Isenberg was known as a budget expert while serving in the Assembly.During his tenure in the Legislature, Isenberg served as Chair of the Assembly Judiciary Committee (1989–96) and Assistant Speaker pro Tempore (1986–88).