| Gallatin County High School | |
| Location: | 404 W. Main, Bozeman, Montana |
| Coordinates: | 45.6789°N -111.0425°W |
| Built: | 1902, c. 1914, 1936-37 |
| Architect: | George Hancock, Fred F. Willson |
| Architecture: | Classical Revival, Romanesque, Art Deco |
| Added: | January 22, 1988 |
| Area: | less than one acre |
| Refnum: | 87002309 |
The Gallatin County High School was a public high school in Bozeman, Montana. It was built Romanesque/Classical Revival style in 1902, expanded in c. 1914, and gained an Art Deco addition in 1936–37. The c.1914 and 1936-37 work was designed by architect Fred F. Willson; it was renamed Willson School following its conversion to a junior high school.
It includes Classical Revival, Art Deco, and Romanesque architecture. At 404 West Main Street, it was listed on the National Register of Historic Places in 1988.
A 1987 review of the building notes that it "is dominated by a large, rounded, projecting pavilion, which is actually a feature related to the Streamline Moderne style, rather than Art Deco which is the overall style of the building."[1]
GCHS was succeeded by the new Bozeman High School in 1958, located a mile west at 205 North 11th Avenue.