Shawmut is a census-designated place and unincorporated community in Wheatland County, Montana, United States. As of the 2020 census, Shawmut had a population of 42. Shawmut has a post office with ZIP code 59078, which opened on October 27, 1885. The community is located along U.S. Route 12 and Montana Highway 3.
It is zoned to Harlowton Public Schools.
Season 1, Episode 1 of the documentary television show Neighbors aired in February 2026, featuring a dispute between neighbors Seth and Josh that takes place in Shawmut, Montana.