The Langfjorden is a 35-kilometre (22 mi) long arm of the Romsdalsfjord which begins between the most easterly point on the island of Sekken in Molde and Okseneset in Rauma, both in Møre og Romsdal, Norway). The fjord then continues to the east to the village of Eidsvåg in Nesset.
The fjord's two arms, Eresfjorden at east end and Rødvenfjorden at the west end are oriented to the south. The fjord is crossed by the Åfarnes–Sølsnes Ferry, as part of County Road 64. The ferry has been proposed replaced by the Langfjord Tunnel. The village of Mittet in Rauma lies on the south shore of the fjord.