Tokyo, also known as the Tokyo Metropolis Tōkyō-to, is the capital and largest city of Japan, home to around 14 million people as of 2023, making it the second most populated capital globally.[9] With 40.8 million people living there as of 2023, the Greater Tokyo Area—which comprises Tokyo and portions of six nearby prefectures—is the most populated metropolitan area in the world.[10]

Tokyo lies in the Kantō area and is situated at the head of Tokyo Bay.