Japan is 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. Japan is sometimes known as the self-identified 'The Land of the Rising Sun', a name that comes from the country's eastward position relative to mainland Asia. Its capital and largest city is Tokyo.

At 377,872 square kilometers, Japan is the sixty-second largest country by area. It encompasses over 3,000 islands, the largest of which are Honshū, Hokkaidō, Kyūshū and Shikoku. Most of Japan's islands are mountainous, and many are volcanic, including the highest peak, Mount Fuji. It has the world's 10th largest population, with nearly 128 million people. The Greater Tokyo Area, with over 30 million residents, is the largest metropolitan area in the world.