| Jack Spencer | |
| Fullname: | John Shepherd Spencer |
| Birth Date: | 24 August 1920 |
| Birth Place: | Bacup, England |
| Death Date: | 1966 (aged 45 or 46) |
| Position: | Inside forward |
| Years1: | 1948–1951 |
| Caps1: | 37 |
| Goals1: | 8 |
| Years2: | 1951–1952 |
| Caps2: | 29 |
| Goals2: | 7 |
| Totalcaps: | 66 |
| Totalgoals: | 15 |
John Shepherd Spencer (24 August 1920 – 1966) was an English professional association footballer who played as an inside forward.