Keo Rumchong is a Cambodian professional Kun Khmer fighter.

Kun Khmer, or Pradal Serey, is a combat sport that originated in Cambodia. The sport consists of stand up striking and clinch fighting, where the objective is to knock an opponent out, force a technical knockout, or win a match by points. The sport was codified in Cambodia by the French colonial administration in the early 20th century, and was derived from centuries-old traditions, namely Bokator, the close-quarter combat system used during the Khmer empire. The official Khmer name of the sport is Kbach Kun Pradal Khmer.