| Headercolor: | lightsteelblue |
| Birth Date: | 5 January 1922 |
| Birth Place: | Brattfors, Sweden |
| Death Date: | 11 April 2012 (aged 90) |
| Death Place: | Karlstad, Sweden |
| Height: | 1.78m (05.84feet) |
| Weight: | 67kg (148lb) |
| Sport: | Athletics |
| Event: | Marathon, 10000 m |
| Club: | IK Viking, Hagfors |
| Pb: | 10000 m – 29:51.2 (1952) Mar – 2:21:40 (1955)[1] |
| Show-Medals: | yes |
Gustaf Nils Jansson (5 January 1922 – 11 April 2012) was a Swedish long-distance runner who won the bronze medal in the marathon at the 1952 Summer Olympics. He finished fifth at the 1954 European Athletics Championships.[2] [3] [4] [5]