Cáo Dàyuán (Chinese: 曹大元), born January 26, 1962) is a professional Go player.

Cao started learning Go when he was 11.

He won the 4th World Amateur Go Championship in 1982 and turned professional in 1985.

Ranks #10 in total number of titles in China.

This biographical article relating to a Go figure from the People's Republic of China is a stub.