The main industry on Frøya is fish farming. Frøya has developed into one of Norway's foremost aquacultural municipalities with all its fish farming and related businesses. Commercial fishing has a long tradition on Frøya, Sula Mausund and Sørburøy in Froan. Frøya is the biggest fishing county in Sør-Trøndelag. One hundred and eighty fishermen are dependent on fish as their main source of income. In agriculture there are 65 active farmers that keep livestock.