Fincastle may refer to:
- The Fincastle competition, a yearly competition among the Commonwealth Air Forces
- Fincastle, Kentucky, United States
- Fincastle, Virginia, United States
- Fincastle County, Virginia, a former county
- Fort Henry (Virginia), originally known as Fort Fincastle
- Fort Fincastle, Fort in Nassau, Bahamas.
- Viscount of Fincastle, a title related to the Earl of Dunmore