- Hellesta, Sweden1
- Hendersonville, Henderson County, South Carolina, United States1
- Heriot, Sumter County, South Carolina, United States1
- Herkimer County, New York, United States1
- Hermon, St. Lawrence County, New York, United States1
- High Falls, Ulster County, New York, United States1
- Himalaya1
- Hopeton Plantation, Altamaha River, Georgia, United States1
- Howes Cave, Cobleskill, Schoharie County, New York, United States1
- Hudson River, New York, United States1
- Hula Valley and Dead Sea, Israel1
- Huntington (Norwich), Hampshire County, Massachusetts, United States1
- Huntington, Suffolk County, New York, United States1
- Idar-Oberstein, Hunsr'ck, Rhineland-Palatinate, Germany1
- Ikaría (Nicaria), Sámos, Greece1
- Ilfeld, Thuringia, Germany1
- Indian Creek, Newberry County, South Carolina, United States1
- Indian Ocean, Pacific Ocean, China Seas1
- Iquique, Tarapaca, Chile1
- Iredell County, North Carolina, United States1