Ilocano literature or Iloko literature pertains to the literary works of writers of Ilocano ancestry regardless of the language used - be it Ilocano, English, Spanish or other foreign and Philippine languages. For writers of the Ilocano language, the terms "Iloko" and "Ilocano" are different. Arbitrarily, "Iloko" is the language while "Ilocano" refers to the people or the ethnicity of the people who speak the Iloko language. This distinction of terms however is impractical since a lot of native Ilocanos interchange them practically.
Ilocano literature in the Philippines is one of several regional Philippine literatures. It is one of the most active tributaries to the general Philippine literature, next to Tagalog (Filipino) and Philippine Literature in English.