WebTokyo ( / ˈtoʊkioʊ /; [8] Japanese: 東京, Tōkyō, [toːkʲoː] ⓘ ), officially the Tokyo Metropolis ( 東京都, Tōkyō-to ), is the capital city of Japan and one of the most populous cities in the world, with a population of over 14 million residents as of 2023. [9] The Greater Tokyo Area, which includes Tokyo and parts of six ...