Lenvik (Northern Sami: Leaŋgáviika) is a municipality in Troms county, Norway. The municipality is partly situated on the mainland, partly on the island of Senja. The administrative centre is the town of Finnsnes, where the Gisund Bridge connects Senja to the mainland on Norwegian County Road 86. Other villages in the municipality include Aglapsvik, Gibostad, Botnhamn, Fjordgård, Finnfjordbotn, Husøy, Langnes, Laukhella, Silsand, and Rossfjordstraumen.