| Birth Date: | 18 January 1933 |
| Birth Place: | Vaplan, Sweden |
| Death Date: | 5 November 2000 (aged 67) |
| Death Place: | Järfälla, Sweden |
| Height: | 1.69m (05.54feet) |
| Weight: | 60kg (130lb) |
| Sport: | Athletics |
| Event: | 100–800 m, hurdles |
| Club: | Näldens IF Stockholms Studenters IF Bromma IF |
| Pb: | 100 m – 10.6 200 m – 21.6 400 m – 47.6 (1958) 800 m – 1:55.0 110 mH – 15.3 400 mH – 51.0 (1958) |
| Show-Medals: | yes |
Per-Owe "Trollet" Trollsås (18 January 1933 – 5 November 2000) was a Swedish sprinter who won a silver medal in the 400 m hurdles at the 1958 European Athletics Championships, setting a national record in the semifinal. He competed in the 400 m hurdles and 4 × 400 m relay at the 1960 Summer Olympics, but failed to reach the finals. Trollsås won national titles in the 100 m (1952–53), 400 m hurdles (1957–60) and 4 × 400 m relay (1958). After retiring from competitions he served as vice-chairman of the Stora Grabbars Association for many years.