| Strokes: | Breaststroke |
| Club: | Simklubben Göteborg |
| Birth Date: | 12 September 1895 |
| Birth Place: | Göteborg, Sweden |
| Death Date: | 3 September 1967 (aged 71) |
| Death Place: | Göteborg, Sweden |
| Show-Medals: | yes |
Fredrik Wilhelm Löwenadler (12 September 1895 – 3 September 1967) was a Swedish swimmer.[1] He competed at the 1912 Summer Olympics in the 200 m breaststroke event, but failed to reach the final.