| John Cornes | |
| Birth Name: | John Reginald Cornes[1] |
| Birth Date: | 30 October 1947 |
| Birth Place: | Cambridge, New Zealand |
| School: | Kuranui College |
| Ru Position: | scrum-half |
| Repyears1: | 1972 |
| Repteam1: | Wallabies |
| Repcaps1: | 1 |
| Reppoints1: | 0 |
John Reginald Cornes (30 October 1947 – 27 March 2014)[1] was a rugby union player who represented Australia.
Cornes, a scrum-half, was born in Cambridge, New Zealand and claimed 1 international rugby cap for Australia.