The Nakajima G8N Renzan ('Mountain Range') was a four-engine long-range bomber designed for use by the Imperial Japanese Navy. The Navy designation was 'Type 18 land-based attack aircraft', the Allied code name was 'Rita'.
The initial prototype was completed in October 1944 and delivered to the Navy for testing in January 1945, a mere one year after the Navy ordered development to start. Three further examples were completed by June 1945, with the third prototype being destroyed on the ground by US carrier aircraft.