Japan An island country in East Asia. Located in the Pacific Ocean, it lies to the east of China, Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea in the south. LanguaL curation note: US FDA 1995 Code: JP Northeast Asia Country Japan An island country in East Asia. Located in the Pacific Ocean, it lies to the east of China, Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea in the south. LanguaL curation note: US FDA 1995 Code: JP Northeast Asia