Joliet Catholic Academy (Joliet Catholic or JCA) is a coed Catholic high school in Joliet, Illinois. It is located in the Roman Catholic Diocese of Joliet. One of the oldest Catholic high schools in the Chicago area, Joliet Catholic is perhaps best known for its prowess in football. Since the advent of the Illinois High School Association (IHSA) state football playoffs in 1974, JCA is second for most State Championships with 15.

The modern school is the result of a merger between the all-girls St. Francis Academy and the all-male Joliet Catholic High School, which was formerly known as DeLaSalle High School for Boys. It is this merger that results in the school's shared affiliation with the Carmelites and the Joliet Franciscan Sisters.