Port Lihou Island or Yeta (Yœtha beard) is an island in the Torres Strait, in Queensland's north between the Australian mainland and Papua New Guinea. It lies off the south coast of Muralag, separated by a channel that is three kilometres long but only a few metres wide at the north-eastern end (170 m at the south-western end). It is approximately 2.8 by 2.8 km in size.