| Biliran Watchtower | |
| Status: | Ruins |
| Building Type: | Watchtower |
| Material: | Coral |
| Destruction Date: | 1774 |
| Location Town: | Biliran |
| Location Country: | Philippines |
| Coordinates: | 11.4639°N 124.4797°W |
| Completion Date: | 1765 |
The Biliran Watchtower, also known as Nasunugan Watchtower, is a watchtower ruin located in Biliran, Philippines.
Built in 1765 under the initiative of Filipino priest Gaspar Ignacio de Guevara, the watchtower was used to watch Biliran's coast for Muslim raids.[1] In 1774, the raiders attacked and burned the local settlement, including the watchtower.[2]
In 2000, the watchtower was reconstructed using its original materials. In 2008, the National Historical Institute (now the National Historical Commission of the Philippines)[3] installed a historical marker on the watchtower.[4]