Karl Slezak (born December 14, 1981) is a Canadian equestrian competing in the eventing disicipline.

[1] Slezak has represented Canada at two Pan American Games.

[1] Slezak first represented Canada at the 2019 Pan American Games in Lima, Peru.

[4] Four years later at the 2023 Pan American Games, Slezak would win the gold medal as part of the team event.

[5] In July 2024, Slezak qualified to compete for Canada at the 2024 Summer Olympics.