The Subaé River is a river in Bahia state of Brazil. It has its source in the city of Feira de Santana and runs 55 kilometres (34 mi) to the mouth at the Baía de Todos os Santos. The river was used by the Portuguese to create a large-scale sugarcane production in the Recôncavo region. The city of Santo Amaro was built on terraced land above the river. It has a single tributary, the Serjimirim River.