Sandvík is the northernmost village of the island of Suðuroy in the Faroe Islands. It is situated on the northern side of a shallow fjord. The village was previously known as Hvalvík. It changed its name to Sandvík in 1913 as there was too much confusion regarding mail delivery, because there is another village named Hvalvík on Streymoy. The village had originally been known as Sandvík during the Viking Age.

Suðuroy is the southernmost of the Faroe Islands. The island covers 163.7 square kilometres (63.2 sq mi). In 2018 the population was 4,601. Suðuroy region (sýsla) comprises this island and Lítla Dímun, the next isle northward in the Faroes, which is uninhabited.