Colegio Williams ("Williams College") is a private school system in Mexico City, serving preschool through high school (senior high school). It has three campuses: Campus Mixcoac in Mixcoac, Benito Juárez; Campus San Jerónimo in San Jerónimo Lídice, Magdalena Contreras, and Campus Ajusco in San Miguel Ajusco, Tlalpan. Its head office is in the Mixcoac campus. It was founded in 1899 by British educator and traveler Camilo John Williams.