Thamshamn[2] or Thamshavn is a small port village in Orkland Municipality in Trøndelag county, Norway.

It is the site of the port for the town of Orkanger and the ferrosilicon plant Elkem Thamshavn.

It is located right along European route E39 and is the Thamshavn Station was the terminus of the Thamshavnbanen railway.

Thamshavn came into being in 1867 when the local farmer Wilhelm Thams established a sawmill on the area that was named after him.

The smelting plant employs about 130 people on a daily basis, producing some of the finest silicon there is in the world.