Hellesøy may refer to:
Places Hellesøy, Stavanger, an island in the municipality of Stavanger in Rogaland county, Norway Hellesøy, Kragerø, an island in the municipality of Kragerø in Telemark county, Norway Hellesøy, or Hellesøyna, an island in the municipality of Øygarden in Vestland county, Norway Hellesøy Lighthouse, or Hellisøy Lighthouse, a lighthouse in the municipality of Fedje in Vestland county, Norway
Other Hellesøy Verft, a small shipbuilding company with a shipyard in Kvinnherad, Vestland county, Norway