The Estrada de Ferro Oeste de Minas (EFOM) was a 2 ft 6 in (762 mm) narrow-gauge railway located in the southeastern Brazilian state of Minas Gerais. At its peak the railway's route totalled 775 km (482 mi). A portion of the railway still operates as a heritage railway, and one of the major stations (São João del Rei) is now Brazil's largest railway museum.