| Birth Place: | Bollnäs, Sweden |
| Height: | 186 cm |
| Weight: | 89 kg |
| Sport: | Athletics |
| Event: | Javelin throw |
| Pb: | 87.76 m (1968) |
| Club: | Gävle GIK Turebergs IF Gefle IF |
| Show-Medals: | yes |
Karl Åke Nilsson (born 29 April 1945) is a retired Swedish javelin thrower. In 1968 he won the national title and set a national record at 87.76 m, which ranked him #3 in the world and was enough for an Olympic bronze medal. He threw a mere 83.48 m in the 1968 Olympic final and placed sixth.