Grossmont College is a public community college in El Cajon, California. Its name originated with the silent film actor and producer William J. Gross, who was enticed by Ed Fletcher to invest in the purchase of land, part of which was called Grossmont. The campus sits in the Fletcher Hills community of El Cajon and is bordered by the cities of San Diego and Santee. Grossmont College along with Cuyamaca College make up what is the Grossmont–Cuyamaca Community College District. Grossmont is part of the California Community Colleges system.

Grossmont College is also home to Grossmont Middle College High School, where selected high school students can receive both high school and college credit for taking courses on campus. The newspaper for Grossmont College is The Summit. Its radio station is Griffin Radio.