Vestmanna is a town in the Faroe Islands on the west of the island of Streymoy. It was formerly a ferry port, until an undersea tunnel, the Vágatunnilin, was built from Vágar to Kvívík and Stykkið further south on Streymoy. The cliffs west of Vestmanna, Vestmannabjørgini, are very popular for excursions by boat.