Juan E. Camarillo Jr. (April 10, 1867 – August 21, 1936) was a wealthy Californio landowner and philanthropist in Ventura County, California, United States.
[1] Camarillo and his brother owned Rancho Calleguas upon the death of their father.
On March 3, 1927, Camarillo donated 100 acres (0.40 km2) to the Roman Catholic Archdiocese of Los Angeles for the purpose of creating a seminary.
On July 27, 1927, Pope Pius XI enrolled Camarillo as a knight in the Pontifical Equestrian Order of Saint Sylvester.
His will bequeathed the family chapel to the Order of the Friars Minor, who then donated it to the Archdiocese of Los Angeles.