ONE Fight Night 35: Buntan vs. Hemetsberger was a combat sports event produced by ONE Championship that took place on September 6, 2025, at Lumpinee Boxing Stadium in Bangkok, Thailand. A ONE Women's Strawweight Muay Thai World Championship bout for the vacant title between the current ONE Women's Strawweight Kickboxing World Champion Jackie Buntan and Stella Hemetsberger headlined the event.