| Nanjarayan Tank Bird Sanctuary | |
| Map: | India Tamil Nadu |
| Relief: | 1 |
| Coordinates: | 11.2142°N 77.5264°W |
| Label: | Nanjarayan Tank |
| Established: | 2022 |
| Area Km2: | 1.26 |
| Governing Body: | Tamil Nadu Forest Department |
Nanjarayan Tank Bird Sanctuary is a protected area and bird sanctuary located in Tiruppur district of the Indian state of Tamil Nadu. The sanctuary covers an area of 1.26km2 and was notified in 2022.[1] It was designated as a Ramsar site of International importance in 2024.[2]
It is a large shallow wetland. The lake derived it's name from King Nanjarayan who repaired and restored the lake during his reign.