| Jack Spencer | |
| Birth Date: | 20 December 1920 |
| Birth Place: | Sydney, New South Wales, Australia |
| Death Place: | Bateau Bay, New South Wales, Australia |
| Club1: | Balmain |
| Year1start: | 1942 |
| Year1end: | 51 |
| Appearances1: | 149 |
| Tries1: | 26 |
| Goals1: | 2 |
| Fieldgoals1: | 0 |
| Points1: | 82 |
| Teama: | New South Wales |
| Yearastart: | 1945 |
| Appearancesa: | 2 |
| Triesa: | 1 |
| Goalsa: | 0 |
| Fieldgoalsa: | 0 |
| Pointsa: | 3 |
| Teamb: | NSW City |
| Yearbstart: | 1945 |
| Yearbend: | 46 |
| Appearancesb: | 2 |
| Triesb: | 2 |
| Goalsb: | 0 |
| Fieldgoalsb: | 0 |
| Pointsb: | 6 |
| Retired: | yes |
| Source: | [1] |
| Updated: | 17 June 2019 |
Jack Spencer (1920–1998) was an Australian rugby league footballer who played in the 1940s and 1950s, a state representative prop forward who won two premierships with the Balmain club in Sydney.
Spencer had a long top-grade career playing eleven seasons at the Balmain club between 1942 and 1951. He also represented New South Wales on two occasions in 1945.
Spencer was a rugged forward who played in two winning premiership teams in 1946 and 1947. He also played in losing grand finals in 1945 and 1948.
He was the father of another premiership winning Balmain player, named John Spencer, who played between 1966-1975.[2]
Spencer died at Bateau Bay, New South Wales on 10 February 1998 aged 77.[3]