Map - Agdenes

Agdenes is a former municipality in Trøndelag county, Norway. The 317 km2 municipality existed from 1896 until its dissolution in 2020 when it became part of Orkland Municipality. It was part of the Fosen region. The administrative centre was the village of Selbekken. Other villages in the municipality included Ingdalen, Lensvik, Vassbygda, Vernes, and Leksa. The Brekstad–Valset Ferry connected Agdenes to the town of Brekstad in Ørland municipality on the other side of the Trondheimsfjorden.

At the time of its dissolution, the 317 km2 municipality is the 270th largest by area out of the 422 municipalities in Norway. Agdenes is the 344th most populous municipality in Norway with a population of 1,684. The municipality's population density is 5.7 PD/km2 and its population has decreased by 4.2% over the last decade.

The municipality of Værnes was established on 1 January 1896 when it was separated from the large municipality of Ørland which originally included land on both sides of the mouth of the Trondheimsfjorden. The new municipality of Værnes encompassed the area along the south side of the Trondheimsleia and Trondheimsfjorden and it initially had a population of 1,412. The name was changed to Agdenes on 17 May 1897 by a royal resolution. The administrative centre was originally at the village of Værnes where the Agdenes Church is located.

During the 1960s, there were many municipal mergers across Norway due to the work of the Schei Committee. On 1 January 1964, the western part of Agdenes (Ytre Agdenes) was separated from the rest of the municipality and it was merged with the neighboring municipalities of Snillfjord (population: 681) and Heim (population: 724) to form the new municipality of Snillfjord. On the same date, the rest of Agdenes municipality (population: 858) was merged with the neighboring municipalities of Lensvik (population: 1,136) and the Ingdalen area of Stadsbygd (population: 171) and together, they formed a new, larger municipality of Agdenes.

On 1 January 1995, the Moldtun area (population: 21) was transferred from Agdenes to the neighboring municipality of Snillfjord. This transfer was approved because the area had been without an outside road connection, and so the only connection was by boat which made it very close to the village of Vernes in Agdenes. When the road was built, it was built to the west, connecting it to Snillfjord, not Agdenes. Therefore, it was logical for the residents to vote to change municipalities.

On 1 January 2018, the municipality switched from the old Sør-Trøndelag county to the new Trøndelag county. On 1 January 2020, the municipalities of Agdenes, Orkdal, and Meldal along with the majority of Snillfjord were merged to form the new municipality of Orkland.