Orkdal Fjord (English) or Orkdalsfjorden (Norwegian)[1] is a branch of the Trondheim Fjord located in Orkland Municipality and Skaun Municipality in Trøndelag county, Norway.

This is where the Korsfjorden part of the Trondheim Fjord splits into two separate branches; Gaulosen that stretches towards the southeast and the Orkdal Fjord that stretches about 11 kilometres (6.8 mi) towards the southwest to Orkanger and the mouth of the Orkla river at the end of the fjord.

[3] Much of the land on either side of the fjord is quite steep and the gradient often continues into the sea with the fjord reaching depths in excess of 350 metres (1,150 ft) just a short distance from the shore in some places.

The maximum depth of the Trondheim Fjord is around 600 metres (2,000 ft).

Orkanger Harbour, which also includes Thamshamn, lies at the end of the fjord.