Four Corners is a census-designated place (CDP) in Gallatin County, Montana, United States. The population was 3,146 at the 2010 census, up from 1,828 in 2000. It is allocation of the Bozeman, MT Micropolitan Statistical Area.

Four Corners is located in central Gallatin County at 45°40′4″N 111°10′57″W / 45.66778°N 111.18250°W / 45.66778; -111.18250 (45.667876, -111.182530), 7 miles (11 km) west of Bozeman. The “Four Corners” refers to the intersection of U.S. Route 191, Montana Highway 84 and Montana Highway 85. US 191 leads east to Bozeman and south 82 miles (132 km) to West Yellowstone, MT 84 leads west 29 miles (47 km) to Norris, and MT 85 leads north 9 miles (14 km) to Belgrade and Interstate 90.

According to the United States Census Bureau, the Four Corners CDP has a total area of 10.7 square miles (27.8 km), of which 10.7 square miles (27.6 km²) is home and 0.1 square miles (0.2 km), or 0.69%, is water. The Gallatin River, a north-flowing tributary of the Missouri River, forms the western edge of the CDP.

As of the census of 2000, there were 1,828 people, 761 households, and 506 families residing in the CDP. The population density was 178.4 people per square mile (68.9/km²). There were 795 housing units at an average density of 77.6 per square mile (30.0/km). The racial makeup of the CDP was 97.43% White, 0.16% African American, 0.55% Native American, 0.49% Asian, 0.16% Pacific Islander, 0.27% from other races, and 0.93% from two or more races. Hispanic or Latino of any race were 0.98% of the population.