Chūō (中央区, Chūō-ku^?) is one of the 23 special wards that form the heart of Tokyo, Japan. The ward refers to itself as Chūō City in English.

Its Japanese name literally means "Central Ward," and it is historically the main commercial center of Tokyo, although Shinjuku has risen to challenge it since the end of World War II. The most famous district in Chūō is Ginza (銀座), built on the site of a former silver mint from which it takes its name. The gold mint, or Kinza (金座), formerly occupied the site of the present-day Bank of Japan (日本銀行) headquarters building, also in Chūō.

As of 2008, the ward has an estimated resident population of 108,943 and a density of 9654 persons per km². However, because of the concentration of businesses, offices and retail space, the daytime population swells to an estimated 650,000.