Iōjima may refer to:

  • An island known as Iwo Jima in English. In Japanese, it is officially known as Iōtō, although at one point it was officially also Iōjima
  • Iōjima, Kagoshima, one of the three islands that forms the village of Mishima, Kagoshima, Japan; one of the Ōsumi Islands
  • Iōjima, Nagasaki, a former town in Nagasaki Prefecture, Japan

See also edit