| Jack Marshall | |
| Birth Name: | John Samuel Marshall[1] |
| Birth Date: | 21 March 1926 |
| Birth Place: | Belmont, New South Wales |
| Ru Position: | wing |
| Repyears1: | 1949 |
| Repteam1: | Wallabies |
| Repcaps1: | 1 |
| Reppoints1: | 0 |
John Samuel "Jack" Marshall (21 March 1926 - 6 March 2013) was a rugby union player who represented Australia.
Marshall, a wing, was born in Belmont, New South Wales and claimed 1 international rugby cap for Australia.