Mount Sinai Memorial Park comprises two Jewish cemeteries in the Los Angeles area: Mount Sinai Hollywood Hills, established in 1953, and Mount Sinai Simi Valley, opened in 1997. Both cemeteries are administered by Mount Sinai Memorial Parks and Mortuaries, a nonprofit owned and operated by the Sinai Temple. Collectively, they form the largest Jewish cemeteries in the Western United States. Many notable Jewish people from the American entertainment and arts industry are buried here.