Sumter may refer to:
- General Thomas Sumter, hero of the American Revolution
Places in the United States:
- Fort Sumter, location of the first shots of the United States Civil War
- Sumter, South Carolina
- Sumter National Forest
- Sumter County, Alabama
- Sumter County, Florida
- Sumter County, Georgia
- Sumter County, South Carolina
- Sumter Township, McLeod County, Minnesota
- Other uses
- CSS Sumter a Confederate Navy vessel in the American Civil War
- USS Sumter (1862), the former CSS General Sumter, a cottonclad ram captured in 1862
- USS Sumter (APA-52) (previously AP-97), an attack transport; formerly Iberville
- USS Sumter (LST-1181), a tank landing ship
- Sumter class attack transport