Jamaica
lowest point: Caribbean Sea 0 m
highest point: Blue Mountain Peak 2,256 m
Jan Mayen
lowest point: Norwegian Sea 0 m
highest point: Haakon VII Toppen/Beerenberg 2,277 m
Japan
lowest point: Hachiro-gata -4 m
highest point: Mount Fuji 3,776 m
Jarvis Island
lowest point: Pacific Ocean 0 m
highest point: unnamed location 7 m
Jersey
lowest point: Atlantic Ocean 0 m
highest point: unnamed location 143 m
Johnston Atoll
lowest point: Pacific Ocean 0 m
highest point: Summit Peak 5 m
Jordan
lowest point: Dead Sea -408 m
highest point: Jabal Ram 1,734 m
Juan de Nova Island
lowest point: Indian Ocean 0 m
highest point: unnamed location 10 m
Kazakhstan
lowest point: Vpadina Kaundy -132 m
highest point: Khan Tangiri Shyngy (Pik Khan-Tengri) 6,995 m
Kenya
lowest point: Indian Ocean 0 m
highest point: Mount Kenya 5,199 m