| Krusadai Island | |
| Area Km2: | 0.658 |
| Country: | India |
| Country Admin Divisions Title: | State |
| Country Admin Divisions: | Tamil Nadu |
| Country Admin Divisions Title 1: | District |
| Country Admin Divisions 1: | Ramanathapuram |
| Country Admin Divisions Title 2: | Taluk |
| Country Admin Divisions 2: | Rameswaram |
Krusadai Island is an uninhabited island in the Gulf of Mannar situated south of Pamban Island. The island belongs to India and forms a part of the Gulf of Mannar Marine National Park.