Sieng Chanthea (Khmer: សៀង ចន្ធា: born 9 September 2002), is a Cambodian professional footballer who plays as a forward for Boeung Ket and the Cambodian national team in various levels. He made his senior debut in a 2–0 victory against Pakistan in the 2022 FIFA World Cup qualification on 6 June 2019, becoming the youngest player to score a goal for Cambodia and in a FIFA World Cup qualification match at the age of 16 years old.