| John Dempsey | |
| Fullname: | John Dempsey |
| Birth Date: | 2 April 1951 |
| Birth Place: | Birkenhead, England |
| Position: | Full back |
| Years1: | 1967–1972 |
| Clubs1: | Tranmere Rovers |
| Caps1: | 53 |
| Goals1: | 1 |
John Dempsey (born 2 April 1951) is an English footballer, who played as a full back in the Football League for Tranmere Rovers.