| Ray O'Callaghan | |
| Birth Name: | Thomas Raymond O'Callaghan |
| Birth Date: | 19 January 1925 |
| Birth Place: | Greymouth, New Zealand |
| Death Place: | Wellington, New Zealand |
| Ru Position: | First five-eighth |
| Height: | 1.80NaN0 |
| Weight: | 86kg (190lb) |
| Ru Nationalcaps: | 1 |
| Ru Nationalpoints: | (3) |
| Ru Nationalyears: | 1949 |
| Ru Province: | Wellington |
| Occupation: | Rugby administrator and coach |
| School: | Marist Brothers High School, Greymouth |
Thomas Raymond O'Callaghan (19 January 1925 – 17 December 2004) was a New Zealand rugby union player. A second five-eighth, O'Callaghan represented Wellington at a provincial level. He was a member of the New Zealand national side, the All Blacks, in 1949, playing a single international match against Australia earning 3 points.[1]