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