
In Norwegian folklore, Selma (Norwegian: Seljordsormen, "the Seljord serpent") is a legendary sea serpent said to live in the 13-kilometre-long (8-mile) Lake Seljord (Seljordsvatnet) in Seljord Municipality, Telemark, Norway.
The sea serpent Selma has been depicted in the coat of arms of Seljord since 1989. Designed by sculpturer Trygve Magnus Barstad, the arms show Selma in a gold-color on a red background.
The sea serpent has been the subject of discussion since at least the 18th century. Eyewitness descriptions of encounters have tended to peak during hot, quiet summers. The oldest written account of the creature dates from 1750, when it was said to have rounded a rowboat belonging to a man from Bø rowing across from Ulvenes to Nes.