Monte Alegre de Minas is a municipality in the Triângulo Mineiro region of western Minas Gerais, Brazil. It lies within the immediate and intermediate geographic regions of Uberlândia.
The municipality covers 2,595.957 km2 (1,002.305 sq mi). Its population was 20,170 at the 2022 census and was estimated at 20,708 in 2025.