The Motobu Udun Tomb (Japanese: 本部御殿墓, Motobu Udun-baka) is a turtleback tomb (亀甲墓 kamekōbaka) located in Ganeko in today's Ginowan City, Okinawa Prefecture, Japan. The tomb belongs to the House of Motobu whose origin is Prince Motobu Chōhei (本部朝平, aka Shō Kōshin 尚弘信, 1655–1687), the 6th son of the 10th King Shō Shitsu (1629–1668) of the Second Royal Shō Dynasty of Ryūkyū.[1][2]