Tanimbar Islands (tänĬm´bär, tə–) or Tenimbar Islands (tĕnĬm´bär, tə–), group of about 30 islands, c.2,100 sq mi (5,440 sq km), E Indonesia, in the Banda Sea, between the Aru Islands and Timor, in the Moluccas. The largest of the group is Yamdena. Saumlaki is the chief town. Important products are copra, tortoiseshell, and trepang. The group is also called Timorlaut.