- Huamachuco (modern town), Huamachuco District, Northern Peru1
- Humboldt County, California1
- Independence Lake, Nevada and Sierra Counties, California1
- Indiana1
- Inscription Rock, Valencia County, New Mexico1
- Italy3
- Jaipur district, Rajasthan, India23
- Japan3
- Java, Indonesia2
- Jemez, Sandoval County, New Mexico1
- Jericho, West Bank, Palestine1
- Johnstone Strait, British Columbia, Canada1
- Kameiros (ancient city), Rhodes3
- Katimin (historic village), Klamath River, Siskiyou County1
- Kepel, Klamath River, Humboldt County1
- Klamath Lake, Klamath County, Central Oregon1
- Klamath River, Humboldt County, California3
- Klamath River, Siskiyou County, California1
- Klazomenai (ancient city), Ionia2
- Laguna, Cibola County, New Mexico1