| Birth Place: | Flen, Sweden |
| Height: | 1.75m (05.74feet) |
| Weight: | 62kg (137lb) |
| Sport: | Athletics |
| Event: | 1,500 m; 5,000 m |
| Club: | IFK Sundsvall |
| Pb: | 1,500 m – 3.43.2 (1963) 5,000 m – 13:49.2 (1963) |
| Show-Medals: | yes |
Sven-Olov Martin "Esso" Larsson (born 24 May 1938) is a retired Swedish runner. He competed in the 5,000 m event at the 1964 Summer Olympics, but failed to reach the final.