Sørfjorden or Mælan is a village in Indre Fosen Municipality in Trøndelag county, Norway. The village is located at the head of the Sørfjorden, an arm of the Stjørnfjorden. It is located about southeast of the village of Råkvåg, about east of Husbysjøen, about northeast of the village of Hasselvika, and about north of the lake Storvatnet. Ramsvik Church is located on the north shore of the fjord, just west of the village.
The village (including neighboring Husbysjøen) had a population (2014) of 243 and a population density of . Since 2014, the population and area data for this village area has not been separately tracked by Statistics Norway.
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