Baía de Todos os Santos (All Saints' Bay) is the main and biggest bay of the state of Bahia, Brazil. Its name expanded to include a whole province, now known as the state of Bahia), where the city of São Salvador da Bahia de Todos os Santos was built. In 1501, one year after the arrival of Pedro Álvares Cabral's fleet in Porto Seguro, Gaspar de Lemos arrived at Todos os Santos Bay and sailed most of the Bahia coast. But the first European man to disembark in Morro de São Paulo was Martim Afonso de Sousa, in 1531, leading an expedition encharged with exploring the coast of the new continent. Amerigo Vespucci was the first European to visit the bay.
This bay surrounds part of the city of Salvador. The other part is surrounded by open ocean.
Farol da Barra (Barra Lighthouse), on the site of a historic fort, stands at the entrance.
In the whaling days, the bay was popular since it was a mating ground for whales.