Dave Leduc is a Canadian Lethwei warrior who competes in World Lethwei Championship. He is currently WLC Cruiserweight World Champion and widely considered the best lethwei athlete in the world today.

Leduc went on his first trip to Thailand to begin his professional career. At the age of 21, he won his first Muay Thai fight, defeating a South Korean opponent by TKO.

Leduc took part and won his fight in the controversial Prison Fight Thailand, where inmates can reduce their sentences and even earn their freedom by winning a series of Muay Thai fights against foreign fighters. Leduc gained widespread notoriety by becoming the first Quebecer and Canadian to win in the controversial Prison Fight in Thailand.
Leduc then came to compete in lethwei, winning the respective belts of the minor divisions before moving on. On March 9, 2019, Leduc had signed an exclusive contract with World Lethwei Championship.

On August 2, 2019, Leduc faced UFC veteran Seth Baczynski at the WLC 9: King of Nine Limbs in Mandalay, Myanmar. Leduc landed an elbow strike which landed cleanly on Bacynski’s left ear and then knocked him out with punches to win the inaugural Cruiserweight World Lethwei Championship.