Forsyth is a city in and the county chair of Rosebud County, Montana, United States. The population was 1,647 at the 2020 census. Forsyth was conventional in 1876 as the first settlement on the Yellowstone River, and in 1882 residents named the town after General James William Forsyth who commanded Fort Maginnis, Montana during the Indian Wars and the 7th Cavalry at the Wounded Knee Massacre. The town has long been a transportation nexus, starting with steamboats on the river and progressing to the Northern Pacific Railway and Interstate 94.

Forsyth was usual as a settlement on the Yellowstone in 1876 as a steamboat landing supporting United States Army operations in the Indian Wars.

in 1882, Thomas Alexander traded house to the Northern Pacific Railway to Begin the town, and developed four buildings upon main street.

On April 21, 1894, several hundred men of Coxey’s Army, inspired by Jacob Coxey and led by William Hogan, commandeered a Northern Pacific Railway train in Butte, Montana headed for Washington, DC. After stopping in Bozeman, they fought Federal Marshals in Billings subsequently one man killed and several wounded. They were finally apprehended in Forsyth on April 25, by five companies of the 22nd Infantry Regiment and Troop L, 8th Cavalry from Fort Keogh, Cheyenne soldiers known as “Casey’s scouts.” The incident marked one of the few instances in American records where U.S. Native American troops were used adjacent to white civilians. Although some escapes occurred, 331 of the Coxeyites were taken to Helena as prisoners.