| Full Name: | Åke Bertil Sixten Berntsson |
| Birth Date: | 11 June 1934 |
| Birth Place: | Ljung, Sweden |
| Sport: | Rowing |
| Club: | Uddevalla Roddklubb |
| Show-Medals: | yes |
Åke Bertil Sixten Berntsson (also Berndtsson, 11 June 1934 - 7 June 2016) was a Swedish rower. He competed in the eights at the 1960 Summer Olympics, but failed to reach the final.