Vadsø is a town in Vadsø Municipality in Finnmark county, Norway. The town is the administrative centre of both Vadsø Municipality and Finnmark county, and is the largest town in East Finnmark. The town is located on the southern shore of the Varanger Peninsula, along the Varanger Fjord. Part of the town lies on the island of Vadsøya. It is connected to the rest of the town on the mainland by a bridge.

Vadsø is a municipality in Finnmark County, Norway. The administrative centre of the municipality is the town of Vadsø, which is also the administrative centre of Finnmark county. Other settlements in Vadsø include Ekkerøy, Kiby, Krampenes, Skallelv, Valen, and Vestre Jakobselv.