The Tachikawa Ki-77 was a Japanese very long-range experimental transport and communications aircraft of World War II derived from a design commissioned by a newspaper to break the flight distance record set by a rival. It was a low-wing cabin monoplane with twin piston engines and a tailwheel undercarriage.

Tachikawa Aircraft Company Limited was an aircraft manufacturer in the Empire of Japan, specializing primarily in aircraft for the Imperial Japanese Army Air Force. It was based at Tachikawa, in Tokyo Prefecture.