Chūō-ku is one of the ten wards in Sapporo, Hokkaido, Japan. Chūō-ku means "central ward" in Japanese. City administration and entertainment facilities are centred in this ward.

Sapporo is a city in Japan. It is the largest city north of Tokyo and the largest city in Hokkaido, the northernmost main island of the country. It ranks as the fifth most populous city in Japan. It is the capital city of Hokkaido Prefecture and Ishikari Subprefecture. Sapporo lies in the southwest of Hokkaido, within the alluvial fan of the Toyohira River, which is a tributary stream of the Ishikari. It is considered the cultural, economic, and political center of Hokkaido.