Collection place
- Yeat's Mound, Linn County, Western Oregon2
- Yeh Tow Yuan temple, Guangdong province, Southern China21
- Yell County, Arkansas4
- Yellowstone National Park9
- Yemen4
- Yemilikum Village, Maprik district, Papua New Guinea1
- Yenchan village, Middle Sepik River, Papua New Guinea1
- Yentchamangua Village, Sepik Plains, East Sepik Province1
- Yerba Buena Island, San Francisco, San Francisco County171
- Yes Bay, Ketchikan Gateway Borough, Alaska2
- Yicuas (PV 69-10), Nazca Valley, Nazca Province86
- Yimas village, Upper Korewori River, Middle Sepik, Papua New Guinea1
- Yirrkala, Northeast Arnhem Land, Northern Territory73
- Ylig, Guam, Mariana Islands35
- Yodogawa (Yodokawa), Tsuruoka, Yamagata Prefecture1
- Yogyakarta, Indonesia1
- Yogyakarta, Java, Indonesia2
- Yokohama shellmound, Yokohama, Kanagawa Prefecture8
- Yokohama, Kanagawa Prefecture, South Kanto38
- Yokosuka, Kanagawa Prefecture, South Kanto20