| Hackness Martello Tower and Battery | |
|---|---|
| Orkney | |
 Hackness Martello Tower | |
  Hackness Martello Tower and Battery Location within Orkney | |
| Coordinates | 58°48′13″N 03°08′48″W / 58.80361°N 3.14667°W |
| Type | Barracks |
| Site information | |
| Owner | Ministry of Defence |
| Operator |  British Army |
| Site history | |
| Built | 1815 |
| Built for | War Office |
| In use | 1815-1918 |
Hackness Martello Tower and Battery is a former British Army barracks and currently a museum located on the island of South Walls, in Orkney, Scotland.