| 1931 Portsmouth Spartans season | |
|---|---|
| Head coach | Potsy Clark |
| Home field | Universal Stadium |
| Results | |
| Record | 11–3 |
| League place | 2nd NFL |
The 1931 Portsmouth Spartans season was their second in the league. The team improved on their previous season's output of 5–6–3, winning eleven games.[1] They finished second in the league.