| 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. It is recently added as ramsar site.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 its name from King Nanjarayan who repaired and restored the lake during his reign.