1. Muay Boran
Muay Boran is the ancient battlefield predecessor to Muay Thai — and it was designed for war, not sport.
Unlike modern Muay Thai, Muay Boran includes lethal techniques targeting the neck, spine, joints, and other vulnerable areas. Soldiers used it in close combat when weapons were lost or broken in battle.
Its devastating strikes, ruthless tactics, and battlefield origins earn Muay Boran the top spot as one of the deadliest martial arts in the world.