Jamaica:
350 sq km (1993 est.)
Jan Mayen:
0 sq km (1993)
Japan:
27,820 sq km (1993 est.)
Jarvis Island:
0 sq km (1998)
Jersey:
NA sq km
Johnston Atoll:
0 sq km (1998)
Jordan:
630 sq km (1993 est.)
Juan de Nova Island:
0 sq km (1993)
Kazakhstan:
22,000 sq km (1996 est.)
Kenya:
660 sq km (1993 est.)