Horse Island
- Hestur
- Horse Holm
- Horse Island (Connecticut)
- Horse Island (Michigan)
- Horse Island (Rockville, South Carolina)
- Horse Island Light
- Horse Island, County Cork
- Horse Island, County Kerry
- Horse Island, Summer Isles
- Horse Islands (Newfoundland and Labrador)
- Horse Isle
- Horsey Island (disambiguation)
- List of townlands in County Down
- List of townlands in County Fermanagh
- Mainland, Orkney
- National Register of Historic Places listings in Charleston County, South Carolina
- Small Isles
- Wild Horse Island