Iau or Turu is a Lakes Plain language

Lakes Plain languages

-Pronouns:The pronouns Ross reconstructs for proto-Tariku are,The corresponding "I" and "thou" pronouns are proto–East Lake Plain *a, *do, Awera yai, nai , and Rasawa e-, de-. Saponi shares no pronouns with the Lakes Plain family; indeed its pronouns mamire "I, we" and ba "thou" are remenincent of...

 of Irian Jaya, Indonesia

Indonesia

Indonesia , officially the Republic of Indonesia , is a country in Southeast Asia and Oceania. Indonesia is an archipelago comprising approximately 13,000 islands. It has 33 provinces with over 238 million people, and is the world's fourth most populous country. Indonesia is a republic, with an...

 spoken by about 600 people. Most speakers are monolingual, and their number is growing. Other peoples in the western Lakes Plain area speak basic Iau. Iau is tonal.

Dialects are Foi (Poi), Turu, Edopi (Elopi), and Iau proper; these may be distinct enough to be considered separate languages. Foi is spoken on the large Tariku River

Tariku River

The Tariku River is a river in the northern part of the Indonesian province of Papua. During the Dutch colonial era it was known as the Rouffaer River. The Tariku River flows generally eastward in the basin north of the island's central mountainous cordillera...

 (Rouffaer River), Turu on the Van Daalen River

Van Daalen River

-See also:*List of rivers of Oceania...

, Iau proper between the rivers, and Edopi at the juncture of the Tariku and Kliki (Fou) rivers.

Another name for the language is Urundi ~ Ururi. Dosobou (Dou, Doufou) is specifically Edopi.