Kvalsund or Kvalsundet may refer to:
Places Finnmark county, Norway Kvalsund Municipality, a former municipality, now part of Hammerfest Municipality Kvalsundet, a strait in Hammerfest Municipality Kvalsund, Hammerfest, a village in Hammerfest Municipality Kvalsund Church, a church in Hammerfest Municipality Kvalsund Bridge, a bridge in Hammerfest Municipality
Møre og Romsdal county, Norway Kvalsund (Herøy), a village in Herøy Municipality in Møre og Romsdal county, Norway
Troms county, Norway Kvalsund Tunnel, an undersea tunnel in Tromsø Municipality Kvalsundet (Tromsø), a strait in Tromsø Municipality
Other Kvalsund ship, an ancient ship which was discovered near Kvalsund in Herøy Municipality in Møre og Romsdal, Norway