Fredrik Letzler

Fredrik Lars-Owe Letzler (born 17 February 1972 in Västerhaninge, Stockholm) is a former Swedish freestyle swimmer. He competed twice at the Summer Olympics for his native country, in 1992 and 1996, both in the men's 4×100 m freestyle relay.

Letzler represented Järfälla Sim and Spårvägens SF.