Kvalsund is a municipality in Finnmark county, Norway. The administrative centre of the municipality is the village of Kvalsund. Kvalsund was separated from the municipality of Sørøysund on 1 July 1869.
The Kvalsund Bridge (Kvalsundbrua) is a suspension bridge that crosses Kvalsundet from the mainland to the island of Kvaløya.Since 2007, the mayor of Kvalsund is Tor Arvid Myrseth, who represents the Kvalsund Social Democrats.The Old Norse form of the name was Hvalsund. The first element is hvalr which means "whale" and the last element is Sund which means "strait" or "sound". The Sámi name also translates to Whale (fáles) Strait (nuorri).