The Ibanag language (also written as Ybanag or Ibanak) is an Austronesian language spoken by up to 500,000 speakers, mostly comprising the Ibanag people, in the northeastern provinces of Isabela and Cagayan in the Philippines. Ibanag is spoken widely in the cities of Tuguegarao, Solana, Abulug, Camalaniugan, Lal-lo, Cabagan, Tumauini, San Pablo, Santo Tomas, Santa Maria, and Ilagan, as well as in the area around the Cagayan River. Ibanag is also spoken by Filipinos in the Middle East, United Kingdom, and the United States. Most speakers of Ibanag can also speak Ilocano, the lingua franca of northern Luzon island. The name Ibanag comes from the prefix I- which means 'people of', and bannag, meaning 'river'. Ibanag is closely related to Gaddang, Itawis, Agta, Atta, Yogad, Isneg and Malaweg.