- Jackson County, Oregon1 objects
- Jacumba Valley, San Diego County, California7 objects
- Jacumba Valley, Tecate municipality, Baja California1 objects
- Jafota, Zambia7 objects
- Jalisco, Mexico33 objects
- James Allen Site, Albany County, Wyoming2 objects
- Janesville, Lassen County, California1 objects
- Japan108 objects
- Japanese archipelago, Japan105 objects
- Jebel Berri, Saudi Arabia1 objects
- Jefferson County, Kentucky13 objects
- Jefferson County, Missouri32 objects
- Jefferson County, Wisconsin1 objects
- Johnstonville (CDP), Lassen County, California1 objects
- Jolon, Monterey County, California2 objects
- Joshua Tree National Park, Riverside County1 objects