Ranariddh has 12 half-siblings from his father by different wives; Norodom Buppha Devi is his only full-sibling. Buppha Devi became a ballet dancer, like her mother Phat Kanhol had been during her younger days. Kanhol remarried in 1947 to a military officer, Chap Huot, and had five children with him. Phat Kanhol died from cancer in February 1969 at the age of 49, while Chap Huot was killed in an explosion a year later. Four of Ranariddh's half-siblings by his mother and Chap Huot were killed during the Khmer Rouge years, while one of them, Chap Nhalyvoud, survived. Chap Nhalyvoud served as the governor of Siem Reap Province between 1998 and 2004.