Leavenworth may refer to:
Geography
- Leavenworth, Indiana
- Leavenworth, Minnesota
- Leavenworth, a neighborhood of Omaha, Nebraska
- Leavenworth, Washington
- Leavenworth County, Kansas, a county in northeast Kansas
- Leavenworth, Kansas, a city in the county which includes the fort and federal prisons within its city limits
- Roman Catholic Diocese of Leavenworth
Institutions and structures
- Fort Leavenworth, a U.S. Army base in Leavenworth, Kansas
- Fort Leavenworth National Cemetery, a cemetery on the base
- Midwest Joint Regional Correctional Facility, often referred to as Leavenworth, a military prison built on the grounds of Fort Leavenworth
- United States Penitentiary, Leavenworth, often referred to as Leavenworth, a civilian medium security prison built in the town of Leavenworth, Kansas
- United States Disciplinary Barracks, often referred to as Leavenworth, a military maximum security prison built on the grounds of Fort Leavenworth
People
- Henry Leavenworth, U.S. soldier who established Fort Leavenworth
- Jesse Henry Leavenworth, U.S. soldier, son of Henry Leavenworth