- O'ahu, Hawaiian Windward Islands, Hawaiian Islands1 objects
- Oaxaca, Mexico1 objects
- Oceania229 objects
- Ocucaje District, Ica Valley, Ica Region2 objects
- Ocucaje Site B (El Tambo), Ocucaje District, Ica Valley1 objects
- Ocumicho, Michoacan, Mexico9 objects
- Okavango area, Namibia1 objects
- Oklahoma1 objects
- Okuzuha village, Eastern Highlands Province, Papua New Guinea1 objects
- Oraibi, Third Mesa, Hopi Reservation2 objects
- Owens Valley, Inyo County, California1 objects
- Oyo State, Nigeria5 objects
- Oyo, Oyo State, Nigeria5 objects