| Duncan Hales | |
| Birth Name: | Duncan Alister Hales |
| Birth Date: | 22 November 1947 |
| Birth Place: | Dannevirke, New Zealand |
| Death Place: | United Kingdom |
| Ru Position: | Three-quarter |
| Height: | 1.780NaN0 |
| Weight: | 85kg (187lb) |
| Repteam1: | New Zealand Universities |
| Repyears1: | 1972 |
| Repyears2: | 1972–73 |
| Repcaps2: | 4 |
| Reppoints2: | 0 |
| Province1: | Canterbury |
| Province2: | Hawke's Bay |
| Province3: | Manawatu |
| Provinceyears1: | 1971–73 |
| Provinceyears2: | 1974 |
| Provinceyears3: | 1975–77 |
| Provinceapps1: | 26 |
| Provinceapps2: | 1 |
| Provinceapps3: | 37 |
| Occupation: | Chiropractor |
| School: | Dannevirke High School |
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. He played 27 matches for the All Blacks including four internationals.[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]