Fosen is a traditional district in Trøndelag, consisting of the municipalities Osen, Roan, Åfjord, Ørland, Indre Fosen, Orkland, Heim, Hitra and Frøya. The district is dominated by forested valleys, lakes, coastal cliffs but also shallow areas, and in the interior mountains reaching up to 675 m elevation. The western coast has many skerries and some islands, such as Stokkøya in Åfjord. There are some good salmon rivers, and sea eagles and other sea birds are very common along the coast, notably on the shallow area near Ørland (Grandefjæra). The west coast has mild winters, and some locations receive on average more than 2,000 mm of precipitation per year. Part of the Scandinavian coastal conifer forests are located in the valleys of the peninsula, and smaller areas are classified as temperate rainforest with 67 nature reserves. The largest nature reserve is Øyenskavelen, with many nature types including undisturbed forest, some of it classified as rainforest.

Ørland is a municipality in Trøndelag county, Norway. It is part of the Fosen region. Ørland is located at the southwestern tip of the Fosen peninsula at the northern shore of the mouth of Trondheimsfjord where the Stjørnfjorden arm begins. The administrative centre of the municipality is the village of Bjugn. Other larger settlements in Ørland include Brekstad, Uthaug, Opphaug, Ottersbo, Høybakken, Jøssund, Lysøysundet, Nes, Oksvoll, and Vallersund.