| Forts of Ajuda | |
|---|---|
| Lisbon District, Near Bucelas in Portugal | |
 Fort of Ajuda Grande | |
| Coordinates | 38°56′19″N 9°07′46″W / 38.93861°N 9.12944°W |
| Type | Fort |
| Site information | |
| Open to the public | Yes. |
| Condition | Partly restored. |
| Site history | |
| Built | 1810 |
| Built by | Duke of Wellington |
| Fate | Unused in battle |
The Forts of Ajuda are located in the parish of Bucelas, in the municipality of Loures in the Lisbon District of Portugal. Just a short distance apart, the Forts of Ajuda Grande (Big) and Ajuda Pequeno (Small) were built in 1810 as part of the Lines of Torres Vedras, which were defensive lines to protect the Portuguese capital Lisbon from invasion by the French during the Peninsular War (1807–14).