Mageshima
| Native name:  Japanese: 馬毛島 | |
|---|---|
| Mageshima | |
| Location of Mageshima in the Ōsumi Islands | |
| Geography | |
| Location | East China Sea | 
| Coordinates | 30°44′29.9″N 130°51′16.9″E / 30.741639°N 130.854694°E | 
| Archipelago | Ōsumi Islands | 
| Area | 8.2 km2 (3.2 sq mi) | 
| Coastline | 16.5 km (10.25 mi) | 
| Highest elevation | 71.7 m (235.2 ft) | 
| Highest point | Takenokoshi | 
| Administration | |
| Japan | |
| Kagoshima Prefecture | |
| Demographics | |
| Population | 15 (2005 census) | 
| Pop. density | 1.82/km2 (4.71/sq mi) | 
| Ethnic groups | Japanese | 
Mageshima (馬毛島), is an eight square kilometre Japanese island forming part of the Satsunan Islands, which are usually classed with the Ōsumi Islands. It belongs to Kagoshima Prefecture and it is administered by the city of Nishinoomote on Tanegashima.