"shark") is a Brazilian municipality located in southern part of Santa Catarina state.

It is the main city of the Tubarão River basin region, which comprises 20 municipalities and has a population of 350,000.

Tubarão was named after a native tribal chief called Tubanharô, which means "ferocious father" in Guaraní language.

The main economy is based on agriculture (rice plantations), furniture industry and ceramic tiles.

Tourism is also important due to its thermal water resources in Rio do Pouso and Guarda da Margem Esquerda localities.