Terry, incorporated in 1910, is a town in and the county seat of Prairie County, Montana, United States. The population was 605 at the 2010 census.
The site where Terry is located was first called Joubert's Landing, in recognition of the man who built a supply point along the Yellowstone River for freighters traveling from Bismarck, Dakota Territory, to Miles City, Montana Territory. When the Northern Pacific Railway's transcontinental rail line arrived in 1881, the town was renamed for Alfred Howe Terry, a General in the Union Army who commanded an 1876 expedition in connection with George Armstrong Custer’s campaign against Native Americans, specifically in the west.
Terry became a two-railroad town when the Milwaukee Road constructed a transcontinental line known as the Pacific Extension through the town in the early 20th century. The Custer Creek train wreck, the worst rail disaster in Montana history, occurred near Terry along this line in 1938.