| Olsborg Castle, Olofsborg | |
|---|---|
| Tanum Municipality, Sweden | |
| Coordinates | 58°26′43″N 11°20′37″E / 58.445333°N 11.343542°E |
| Site information | |
| Controlled by | Sweden |
| Site history | |
| Built | 1502 |
| Built by | Nils Ragvaldsson |
| Demolished | 1531 |
Olsborg Castle (Swedish: Olsborg), also Olofsborg, was a fortified castle located in Tanum Municipality in Bohuslän, Sweden. It is situated on a steep cliff, and might previous to later use been an early hill fort.