Nashua is a town in Valley County, Montana, United States.

[3] The town was established as a station on the St. Paul, Minneapolis & Manitoba Railway in 1888.

According to the United States Census Bureau, the town has a total area of 0.66 square miles (1.71 km2), all land.

Amtrak’s Empire Builder, which operates between Seattle/Portland and Chicago, passes through the town on BNSF tracks, but makes no stop.

The nearest station is located in Glasgow, 15 miles (24 km) to the west.

Despite the small number of students in the town's high school (7-12 in a graduating class), basketball, track and field, volleyball, cheerleading as well as American football are accessible to all students because of cooperation with a neighboring high school.

[citation needed] Nashua High School's team name is the Porcupines.