Iriomote Island (西表島, Iriomote-jima, Yaeyama: Irïmutii; Iriomote dialect: Irimutii; Okinawan: Iriumuti) is the largest of the Yaeyama Islands of Japan, and the second largest in Okinawa Prefecture after Okinawa Island itself.
The island has an area of 289.27 km² and a 2005 population of 2,347. The island does not have an airstrip, and most visitors — over 390,000 in 2006 — arrive from Ishigaki by ferry, a 31.4 km ride to Uwahara Port (上原港) on Iriomote's northeast coast or Ōhara Port (大原港) on the southeast coast. Administratively the island belongs to Taketomi Town, Okinawa Prefecture. Infrastructure is limited to a single coastal road connecting the hamlets on the northern and eastern shores.