The City of Tokyo and the Prefecture of Tokyo are both replaced by the Tokyo Metropolis.

Tokyo City was a municipality in Japan and capital of Tokyo Prefecture which existed from 1 May 1889 until the establishment of Tokyo Metropolis on 1 July 1943. The historical boundaries of Tokyo City are now occupied by the special wards of Tokyo. The defunct city and its prefecture became what is now Tokyo, also known as the Tokyo Metropolis or, ambiguously, Tokyo Prefecture.

Tokyo, officially the Tokyo Metropolis, is the capital and most populous city in Japan. With a population of over 14 million in the city proper in 2023, it is one of the most populous urban areas in the world. The Greater Tokyo Area, which includes Tokyo and parts of six neighboring prefectures, is the most populous metropolitan area in the world, with 41 million residents as of 2024.