A Muay Thai Mongkol is a traditional headpiece worn by fighters in the Thai martial art of Muay Thai. The Mongkol is typically made of woven cloth or hemp and is adorned with religious symbols and talismans.

It is worn by fighters during the Wai Kru ceremony, which is performed before a fight to pay respect to the fighter's teachers and ancestors and to ask for their protection. The Mongkol is considered to be a sacred and powerful object, and it is believed to provide the fighter with strength and protection during the fight.