| Håkan Karlsson | |
| Fullname: | Jonas Klas Håkan Karlsson |
| Strokes: | Freestyle |
| Collegeteam: | University of Georgia (U.S.) |
| Birth Date: | 19 January 1970 |
| Birth Place: | Kristianstad, Skåne |
Jonas Klas Håkan Karlsson (born 19 January 1970) is a former freestyle swimmer from Sweden. He competed for his native country at the 1992 Summer Olympics in the men's 100-metre freestyle. He was affiliated with the Karlskrona SS.