William Charles Dalley (18 November 1901 – 9 February 1989) was a New Zealand rugby union player.

Starting out as a utility back, Dalley made his debut at a provincial level for Canterbury in 1921.

He became a specialist halfback in 1924, and was quickly selected for the New Zealand national side, the All Blacks, that year.

After retiring as a player, Dalley served as a member of the Canterbury Rugby Union's management committee from 1932 to 1955, the last three years as chairman.

This biographical article relating to New Zealand rugby union, about a person born in the 1900s, is a stub.