| Den-shima | |
| Native Name: | デン島, Denshima |
| Native Name Link: | Japanese language |
| Location: | East China Sea |
| Coordinates: | 30.7506°N 130.1019°W |
| Archipelago: | Ōsumi Islands |
| Elevation M: | 58 |
| Country: | Japan |
| Country Admin Divisions Title: | Prefectures |
| Country Admin Divisions: | Kagoshima Prefecture |
| Country Admin Divisions Title 1: | District |
| Country Admin Divisions 1: | Kagoshima District |
| Country Admin Divisions Title 2: | Village |
| Country Admin Divisions 2: | Mishima |
| Population: | - uninhabited - |
, also known as, is an uninhabited volcanic pillar located in the Ōsumi Islands and belonging to Kagoshima Prefecture, Japan.
Denshima is located roughly equidistant between Iōjima and Kuroshima. The island is an exposed and highly eroded portion of lava dome associated with the submarine Kikai Caldera, a stratovolcano rising from the ocean floor. It consists of three large rocks, separated by very narrow channels, with a maximum height of 58m (190feet) above sea level, and a smaller rock, just breaching the ocean surface, to one side.