Austad is a hamlet in Siljan Municipality, in Telemark, Norway. Austad lies at 98 m above sea level, in the Scandinavian mountains. The nearest city is Porsgrunn/Skien, 14.2 km to the southwest. Among the landmarks around are Gjerpen Church (10.4 km), Skien Church (10.9 km) and Gimsøy Abbey (11.1 km). Among the natural features are Stubbekollen (11.0 km) and De brendte åsane (11.7 km).