Wiru or Witu is the language spoken by the Wiru people of Ialibu-Pangia District of the Southern Highlands Province of Papua New Guinea. It may be a language isolate within the family of Trans–New Guinea languages.Trans–New Guinea pronouns are no 1sg (< *na) and ki-wi 2pl, ki-ta 2du (< *ki). There are a considerable number of resemblances with the Engan languages, suggesting Wiru might be a member of that family, but language contact has not been ruled out as the reason.