Collection place
- Ulland, Germany3
- Uloro (near Tilden Fulani), Nigeria6
- Ulua river at base of Cerro Palenque, Honduras2
- Uluinavatu (site 17), Uluinavatu, Ra Province5,496
- Uluinavatu, Ra Province, Fiji5,496
- Ulukhaktok, Victoria Island, Inuvik Region7
- Ulupu Village, Maprik district, Papua New Guinea2
- Umaka village, Nigeria8
- Umatilla County, Oregon29
- Umatilla National Forest, Eastern Oregon1
- Umatilla Reservation, Umatilla County, Eastern Oregon20
- Umboi Island, Morobe Province, Momase Region4
- Umbria, Central Italy1,090
- Umgusa River, Zimbabwe65
- Umluj, Tabuk Region, Saudi Arabia2
- Umm El Jemal, Jordan9
- Umma (ancient city), Iraq161
- Umnak Island, Fox Islands, Aleutians East Borough51
- Umuahia, Nigeria5
- Unalakleet, Norton Sound, Nome Borough6