- Ifugao Province, Cordillera Administrative Region, Luzon Island6 objects
- Iglaak, Seward Peninsula, Nome Borough, Alaska1 objects
- Iliuliuk, Unalaska Island, Fox Islands6 objects
- Imiria Cocha (lake) Rio Tamaya, tributary of Rio Ucayali, Peru11 objects
- Inaja and Cosmit Reservation, San Diego County, California1 objects
- Inajá, Rio Andirá, Brazil6 objects
- Inaru River, North Slope, North Slope Borough1 objects
- India18 objects
- Indian Gulch, El Dorado County, California2 objects
- Indochina63 objects
- Indonesia30 objects
- Interior Alaska322 objects
- Inyo County, California19 objects
- Island of Hawai'i, Hawaiian Windward Islands, Hawaiian Islands8 objects
- Islands Region, Papua New Guinea, New Guinea14 objects
- Italy1 objects