| Jacob Erstad | |
| Country: | Norway |
| Birth Date: | 12 January 1898 |
| Discipline: | MAG |
| Club: | Bergens TF |
Jacob Erstad (12 January 1898 – 1 December 1963) was a Norwegian gymnast who competed in the 1920 Summer Olympics.[1] He was part of the Norwegian team, which won the silver medal in the gymnastics men's team, free system event. He was born and died in Bergen, and represented Bergens TF.[2]