Hisøy may refer to:
Places Hisøy (island), an island in Arendal Municipality in Agder county, Norway Hisøy Church, an church in Arendal Municipality in Agder county, Norway Hisøy Municipality, a former municipality in the old Aust-Agder county, Norway
Other Hisøy IL, a sports club based in Arendal Municipality in Agder county, Norway