Edmund Emil Kemper III (born December 18, 1948) is an American serial killer. He committed the murder of ten people, including his paternal grandparents and mother. He regularly engaged in necrophilia and claimed to have consumed the flesh of at least one of his victims, but later retracted this confession.

Born in California, Kemper had a disturbed childhood. He moved to Montana with his abusive mother at a young age before returning to California, where he murdered his paternal grandparents when he was 15. He was subsequently diagnosed by court psychiatrists as suffering from paranoid schizophrenia and sentenced to the Atascadero State Hospital as a criminally insane juvenile.

Released at the age of 21 after convincing psychiatrists he was rehabilitated, Kemper was regarded as non-threatening by his victims. He targeted young female hitchhikers during his killing spree, luring them into his vehicle and driving them to secluded areas where he would murder them before taking their corpses back to his home to be decapitated, dismembered and violated. He then murdered his mother and one of her friends before turning himself in to the authorities. Found sane and guilty at his trial in 1973, he requested the death penalty for his crimes. However, capital punishment was temporarily suspended in California and he instead received eight life sentences. Since then, Kemper has been incarcerated in the California Medical Facility.

Kemper is known for his large stature and high intelligence, standing 6 feet 9 inches (2.06 m) tall, weighing over 250 pounds (113 kg) and having a reported IQ of 145, features that left his victims with little chance to overcome him.

Kemper's personally owned and worn silver December birthstone ring with accompanied signed and dated original (NOT A COPY) certificate of authenticity prepared by Kemper himself. The ring is in excellent condition. The silver is tarnished due to the age of the ring.