Jamaica
250 sq km (1998 est.)

Jan Mayen
0 sq km (1998 est.)

Japan
26,790 sq km (1998 est.)

Jarvis Island
0 sq km (1998 est.)

Jersey
NA sq km

Johnston Atoll
0 sq km (1998 est.)

Jordan
750 sq km (1998 est.)

Juan de Nova Island
0 sq km (1998 est.)

Kazakhstan
23,320 sq km (1998 est.)

Kenya
670 sq km (1998 est.)