ONE Fight Night 13: Allazov vs. Grigorian was a combat sport event produced by ONE Championship that took place on August 5, 2023, at Lumpinee Boxing Stadium in Bangkok, Thailand. A ONE Featherweight Kickboxing World Championship bout between current champion Chingiz Allazov and former Glory Lightweight champion Marat Grigorian headlined the event. The pair met for the first time at Glory 7: Milan in 2013, but the fight ended in a no-contest due to an illegal elbow. Their second meeting took place in Levallois-Perret, France in 2014, where Grigorian won by unanimous decision.