Mira Costa High School is a four-year public high school located in Manhattan Beach, California that first opened 1950. It is the only high school in the Manhattan Beach Unified School District. The school's athletic teams are known as the Mustangs and the school colors are green and gold. Mira Costa is located on the corner of Peck Avenue and Artesia Boulevard.

Manhattan Beach is a city in southwestern Los Angeles County, California, United States, on the Pacific coast south of El Segundo, west of Hawthorne and Redondo Beach, and north of Hermosa Beach. As of the 2020 census, the population was 35,506.