The Evangelical Lutheran Church of Brazil (Portuguese: Igreja Evangélica Luterana do Brasil, IELB) was founded in 1904 in Rio Grande do Sul, a southern state in Brazil.
The IELB is a conservative, confessional Lutheran synod that holds to the Book of Concord. It started as a mission of the Lutheran Church–Missouri Synod and was the Brazilian District of that body. The IELB became an independent church body in 1980. It has about 233,416 members. The IELB is a member of the International Lutheran Council.