| Cat Island | |
| Native Name: | Île aux Chats |
| Native Name Lang: | fr |
| Coordinates: | -19.7667°N 89°W |
| Location: | Indian Ocean |
| Archipelago: | Rodrigues |
| Country: | Mauritius |
| Timezone1: | MUT |
| Utc Offset1: | +4 |
Cat Island (fr|Île aux Chats) is a small island lying south of Rodrigues in the Indian Ocean. It is surrounded by a coral reef and is known for diving and snorkelling sites.