Harbledown Island is an island in the Central Coast region of British Columbia, Canada, located west of West Cracroft Island. It is at the west end of Johnstone Strait[1] and lies at the eastern edge of the Queen Charlotte Strait region. Hanson Island is to its west, West Cracroft Island to the south and southeast, across Baronet Passage, and Turnour Island to the northwest, across Beware Passage.