Mosteiros is a concelho (municipality) of Cape Verde. Situated in the northeastern part of the island of Fogo, it covers 19% of the island area, and is home to 26% of its population. Its capital is the town Mosteiros.
Mosteiros contains one of the few forests in Cape Verde, named Floresta de Monte Velha. The entire terrain are made up of historic lava flows from Mount Fogo which resulted from the last volcanic eruption in 1951. Mosteiros is an agricultural area, its main product is coffee. The illiteracy rate is very high. 31% of the population are over the age of 15.
The municipality Mosteiros was created in 1991, when the older Municipality of Fogo was split in two, the southwestern part becoming the Municipality of São Filipe and the northeastern part becoming the Municipality of Mosteiros.