The Maradugao River (also called Maridugao and Maridagao) is a river that serves as a natural boundary between the provinces of Bukidnon and Lanao del Sur in Mindanao in southern Philippines.

It joins the Pulangi River in Cotabato.

[1][failed verification][dubious – discuss] The river headwaters originate from the Kalatungan Mountain Range and Mount Piapayungan eventually emptying at the Pulangi River.

The Malitubog-Maridagao Dam (also known as Mal-Mar Dam) is an irrigation project by the National Irrigation Administration.

This article related to a river in the Philippines is a stub.