The Iranun language, also known as Iranon or Illanun, is an Austronesian language belonging to the Danao languages spoken in the provinces of Maguindanao del Norte and other part of Lanao del Sur and Lanao del Norte, coastal municipalities of Zamboanga del Sur from Tukuran to Dumalinao, and Cotabato in southern Philippines and the Malaysian state of Sabah. It is the second most spoken language in Maguindanao del Norte after the Maguindanao language.