Muay Thai is a hard martial art from Thailand. It is similar to other Indochinese styles of kickboxing, namely pradal serey from Cambodia, tomoi from Malaysia, lethwei from Myanmar and Muay Lao from Laos. Descended from muay boran, Muay Thai is Thailand's national sport.

Various forms of kickboxing have long been practiced throughout mainland Southeast Asia. Based on a combination of Chinese and Indian martial arts,[1] practitioners claim they date back two thousand years. In Thailand, Muay Thai evolved from muay boran (ancient boxing), an unarmed combat method which would probably have been used by Siamese soldiers after losing their weapons in battle. Some believe that the ancient Siamese military created Muay Boran from the weapon-based art of krabi krabong but others contend that the two were merely developed alongside each other. Krabi krabong nevertheless was an important influence on Muay Boran and so Muay Thai as can be seen in several kicks, holds and the movements in the wai khru which have their origins in armed combat.