| Rex Orr | |
| Birth Name: | Rex William Orr |
| Birth Date: | 19 June 1923 |
| Birth Place: | Gore, New Zealand |
| Death Place: | Christchurch, New Zealand |
| Position: | Fullback |
| Height: | 1.730NaN0 |
| Weight: | 72kg (159lb) |
| Repcaps1: | 1 |
| Reppoints1: | 0 |
| Repyears1: | 1949 |
| Province1: | Otago |
| Province2: | Auckland |
| Occupation: | RNZAF pilot Physical education teacher |
| School: | Gore High School |
Rex William Orr (19 June 1923 – 1 September 2011) was a New Zealand rugby union player. A fullback, Orr represented Otago and Auckland 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.[1]