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.

Hokkaido is the second-largest island of Japan and comprises the largest and northernmost prefecture, making up its own region. The Tsugaru Strait separates Hokkaidō from Honshu; the two islands are connected by the undersea railway Seikan Tunnel.