| Birth Place: | Örebro, Sweden |
| Height: | 174 cm |
| Weight: | 76 kg |
| Club: | Royal Swedish Yacht Club |
| Show-Medals: | yes |
Ernst Arne Karlsson (born 23 March 1936) is a retired Swedish sailor. He was a crew member of the Swedish boat Rush VII that won the silver medal in the 5.5 m class at the 1964 Summer Olympics. His father Hjalmar and younger brother Per-Olof were also Olympic sailors.