The Bay of Islands is an area in New Zealand, and: Bay of Islands (New Zealand electorate), a former New Zealand electorate

Bay of Islands may also refer to:

Bay of Islands, Newfoundland and Labrador, Canada Bay of Islands (electoral district), a provincial electoral district for the House of Assembly of Newfoundland and Labrador Bay of Islands Coastal Park, a coastal reserve in Victoria, Australia

See also Bay Islands (disambiguation) Island Bay, Wellington Bay of Isles