Saint Monica Preparatory is a parochial, co-educational school in Santa Monica, California, consisting of students in grades kindergarten to grade 12. It is located in the Archdiocese of Los Angeles and serves the parish of St. Monica. The school in its current organizational structure was formed by the merging of the parish elementary and high schools into a single TK–12 school, but the elementary and high schools remain on their respective separate campuses.

Santa Monica is a city in Los Angeles County, situated along Santa Monica Bay on California's South Coast. Santa Monica's 2020 U.S. Census population was 93,076. Santa Monica is a popular resort town, owing to its climate, beaches, and hospitality industry. It has a diverse economy, hosting headquarters of companies such as Hulu, Activision Blizzard, Universal Music Group, Lionsgate, Illumination and The Recording Academy.