Fromberg is a town in Carbon County, Montana, United States. It is part of the Billings, Montana Metropolitan Statistical Area. The population was 486 at the 2000 census.
Fromberg is located at 45°23′30″N 108°54′31″W / 45.39167°N 108.90861°W / 45.39167; -108.90861 (45.391656, -108.908650).
According to the United States Census Bureau, the town has a total area of 0.5 square miles (1.2 km²), all of it land.