Birra Ichnusa, or simply Ichnusa, is the name of a popular Sardinian-made beer, which is brewed in Assemini, a town near the Sardinian capital Cagliari. It is named after the Latinized ancient name Sardinia, Hyknusa.
Founded in 1912, Birra Ichnusa is now owned by Heineken International.
Birra Ichnusa Special is a lager with 5.6% and Ichnusa Cruda a non pasteurized lager with 4.9% alc. Serving temperatures for all of them is 3 °C. A Zwickel-style, unfiltered, 'Ichnusa Non Filtrata' (5.0% ABV) is also available.