Robert Leroy Biehler (August 5, 1934 – January 10, 1993) was an American serial killer who killed four people in various neighborhoods of Los Angeles, California from 1966 to 1973, either to cover up previous crimes or as part of contract murders. Unable to be sentenced to death due to Furman v. Georgia, Biehler was instead given four consecutive life terms, which he served until his death in 1993.