This article records tradition as it has been passed down and reported. Its sources are not yet part of the atlas's verified catalogue.
Guinea-Bissau, a small former Portuguese colony on West Africa's Atlantic coast, holds its faiths in something close to a three-way balance: close to half the population is Muslim, mostly Sunni and strongest among the Fula and Mandinka peoples of the interior, roughly a third practices traditional or folk religion rooted in ancestor veneration and spirit belief, particularly among the Balanta and Papel peoples of the coast and the Bijagos archipelago, and a smaller Christian minority, chiefly Catholic, reflects the colonial-era missionary presence concentrated in Bissau and other urban centers.
Traditional religious authorities, particularly the leaders of Bijagos initiation societies and Balanta ancestral cults, continue to hold real local influence that runs alongside, rather than beneath, the country's nominal Muslim and Christian religious establishments, a pattern that predates Portuguese colonization and has outlasted every government since independence in 1974.