Santa Catarina Island (Portuguese: Ilha de Santa Catarina) is an island in the Brazilian state of Santa Catarina. The island covers 523 km² and is the site of the state capital Florianópolis as well as numerous beach resorts, such as Canasvieiras and Cachoeira do Bom Jesus. It is connected to the mainland by three bridges.
The island is colloquially referred to as 'Florianopolis'. Those native to the island are referred to as 'manezinhos.'