| Serasan Island | |
| Native Name: | Pulau Serasan |
| Native Name Lang: | id |
| Nickname: | --> |
| Image Map Caption: | A satellite image of Serasan Island and surrounding islands |
| Pushpin Map: | Indonesia Riau Islands |
| Pushpin Map Caption: | Location of Serasan Island in Riau Islands Province |
| Coordinates: | 2.5125°N 109.0592°W |
| Location: | South China Sea |
| Archipelago: | South Natuna |
| Area Km2: | 45.96 |
| Area M2: | or |
| Area Ha: | --> |
| Length M: | --> |
| Width M: | --> |
| Coastline M: | --> |
| Elevation M: | 441 |
| Country: | Indonesia |
| Country Admin Divisions Title: | Province |
| Country Admin Divisions: | Riau Islands |
| Country Admin Divisions Title 1: | Regency |
| Country Admin Divisions 1: | Natuna Islands |
| Country Largest City: | Serasan |
| Country Area M2: | or |
| Country Area Ha: | --> |
| Country 1 Area M2: | or |
| Country 1 Area Ha: | --> |
| Ethnic Groups: | Malays |
| Timezone1: | Western Indonesia Time |
| Utc Offset1: | +7 |
Serasan Island is an island in the Natuna Regency, Riau Islands, Indonesia.[1] The island is split between two districts, the Serasan District is on the west side and Serasan Timur is on the east side. On March 6, 2023, heavy rainfall created landslides on the island, killing 15 and leaving many more missing.[2] The island hosts the critically endangered Natuna Islands Tarsier, which is endemic to the islands and whose population is declining rapidly.[3]