Ang Duong (June12, 1796 – October 19,1860) is king of Cambodia, who reigns from 1841 to 1844 and 1845 to his death in 1860.

Formally invested in 1848, his rule proves to be most beneficial for the kingdom, which is suffering from several centuries of royal dissent and decline.

His politics focus on sustained national unity and identity and the minimization of foreign interference.

He issues the first substantial revision of the legal codex in centuries and he encourages and supervises religious and cultural reforms.

Confronted with increasing Siamese and Vietnamese encroachment,he attempts to establish an alliance with colonial France on a sovereign basis

Although this rendezvous culminates in the ninety-year period of the French Protectorate of Cambodia, King Ang Duong is the decisive force behind the existence of the modern united Cambodian state.

His official title is Preah Raja Samdach Preah Hariraksha Rama Suriya Maha Isvara Adipati.

He is the agnatic ancestor of all later monarchs of Cambodia.