Duncan Alister Hales (22 November 1947 – 8 January 2024) was a New Zealand rugby union player.

A three-quarter, Hales represented Canterbury, Manawatu and, briefly, Hawke's Bay at a provincial level, and was a member of the New Zealand national side, the All Blacks, from 1972 to 1973.

[1] After retiring from rugby, Hales studied in the United States to become a chiropractor.

He died in the United Kingdom on 8 January 2024, at the age of 76.

[2] This biographical article relating to New Zealand rugby union, about a person born in the 1940s, is a stub.