| Jonas Kældsø Poulsen | |
| Nickname: | Jonas Kældsø |
| Birth Date: | 21 March 1985 |
| Birth Place: | Svendborg, Denmark |
| Weight: | 800NaN0 |
| Classes: | Sailboard |
| Club: | Svendborg Sunds Sejlklub |
| Coach: | Jacob Holst |
| Show-Medals: | yes |
Jonas Kældsø Poulsen (born 21 March 1985) is a Danish former windsurfer, who specialized in the RS:X class.[1] He represented his country Denmark at the 2008 Summer Olympics, finishing among the top twenty-five windsurfers in his signature sailboard.[2] Poulsen trained as a member of Svendborg Sunds Sailing Club (Danish: Svendborg Sunds Sejlklub), under the tutelage of head coach Jacob Holst.[3]
Poulsen competed for the Danish sailing squad in the inaugural men's RS:X class at the 2008 Summer Olympics in Beijing. Building up to his Olympic selection, he scored a commendable, twenty-ninth-place finish to claim one of the 26 berths offered at the 2007 ISAF Worlds in Cascais, Portugal.[4] [5] Poulsen stormed out from a poor start to a blistering top-four finish on the midway of the series. However, he struggled in the breezy conditions on the subsequent races that sent him tumbling down the leaderboard to a lowly twenty-fourth overall with 201 net points.[6]