ONE Friday Fights 31: Kongthoranee vs. Kabutov was a combat sports event produced by ONE Championship that took place on September 1, 2023, at Lumpinee Boxing Stadium in Bangkok, Thailand. A flyweight muay thai bout between two-division Rajadamnern Stadium world champion Kongthoranee Sor.Sommai and Sherzod Kabutov served as the event headliner.