rio de janeiro state is the state in brazil with the most spiritualists (espíritas), a religion that is experiencing growth. however, the church in rio de janeiro seeing the fastest growth is evangelism - also seen as the most practiced among all creeds with a 64% of adepts regularly attending functions.

while accurate statistics remain difficult, religious practice in rio de janeiro can be broadly estimated at 75% roman catholics, 15% protestant / evangelic, 5% spiritualists, 2% asian creeds (buddhism, shintoism), and 2% afro-brazilian religions (candomblé and umbanda), with the rest divided among atheists and other doctrines.