Ang Tong Reachea (1608–1640), also known as Ponhea Nou (Khmer: ពញានូ) or Cau Bana Nu, was the Cambodian king reigned from 1631 to 1640.

Ponhea Nou was the second son of Chey Chettha II. He succeeded the throne in 1631. His uncle Outey served as regent, assuming the title uprayorach (ឧភយោរាជ),^{[citation needed]} the title usually borne by kings who had abdicated but retained executive powers.^{[citation needed]}

Nou died in mysterious circumstances in June 1640.^{[citation needed]} Although Ponhea Chan should be the next king, Outey forced Chan to give the crown to his own son Batom Reachea.

• Chroniques Royales du Cambodge de 1594 à 1677. École française d'Extrême Orient. Paris 1981 ISBN 2855395372
• Achille Dauphin-Meunier Histoire du Cambodge Presses universitaires de France, Paris 1968 Que sais-je ? n° 916.