Harrison Island may refer to:

Canada

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  • Harrison Island (British Columbia), a small island in Esquimalt in Juan de Fuca Strait between Macaulay Point and McLoughlin Point
  • Harrison Island (Manitoba), a small island in Sasaginnigak Lake northwest of Atikaki Provincial Wilderness Park in eastern Manitoba
  • Harrison Island (New Brunswick), a small island in French Lake northeast of Lower Burton
  • Harrison Island (Northwest Territories), a small island between the Middle Channel and East Channel of the Mackenzie River north of Inuvik
  • Harrison Island (Nunavut), a small island in eastern Hudson Bay near Quebec
  • Harrison Island (Oliver Lake, Saskatchewan), a small island in Oliver Lake in northeastern Saskatchewan
  • Harrison Island (Torwalt Lake, Saskatchewan), a small island near Torwalt Lake east of Wollaston Lake in northeastern Saskatchewan

United States

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