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 was built from Vágar to Kvívík and Stykkið. The cliffs west of Vestmanna, Vestmannabjørgini, are very popular for excursions by boat.
A 'Vestmann' was a «Westman», or Gael in Old Norse. The original name was Vestmannahavn, i.e. «Westmen's/Irishmen's harbour».