Townsend is a city in and the county seat of Broadwater County, Montana, United States. The population was 1,867 at the 2000 census.
Lewis and Clark passed through on the voyage of discovery in 1805, although the first white settlers, homesteaders and Civil War veterans in search of gold, did not arrive until the late 1860s. In 1883, a railstop was established as businesses became established supporting gold mining in the region. Townsend was named by railroad officials, in honor of the wife of Charles Barstow Wright, president of the Northern Pacific (1875–1879).
Townsend is located at 46°19′13″N 111°31′4″W / 46.32028°N 111.51778°W / 46.32028; -111.51778 (46.320218, -111.517642).