Mandau may refer to:
Mandau is the traditional weapon of the Dayak people of Borneo. Sometimes it is also known as Parang Ilang among the Bidayuh and Penan people, Malat by the Kayan people or Baieng by the Kenyah people. Mandau is mostly ceremonial. However, a less elaborate version called Ambang is used as an everyday practical tool. Associated with the Headhunting Ceremony, where people would gather to attack other tribes, and gather heads to be used in various festivities, Mandau is both a work of art in itself and a formidable weapon.