Squadron Leader Raymond Brown Hesselyn, MBE, DFC, DFM & Bar (13 March 1921 – 14 November 1963) was one of New Zealand's top fighter aces in World War II. Hesselyn was born in Dunedin, New Zealand. In civilian life, he was a machinist. He joined the Territorial Army in 1939, before joining the Royal New Zealand Air Force. After training, he was posted to Britain in September, 1941, joining first 61 Operational Training Unit (OTU), then No. 234 Squadron as a Flight Sergeant. He died in Uxbridge on 14 November 1963, aged 42.