Ettin, (also "ettin", "etene", "yetun", "ytene", "yotun"), an obsolete English cognate to the Old Norse Jötunn from the Old English Eoten, may refer to:

• Bogle (also called Ettin), a survival of the term in Northumbrian folklore referring to a malevolent mythical creature
• Ettin (Dungeons & Dragons), a two-headed giant
• Ettins, fictional creatures in Narnia
• Ettin, the twisted, mindless remains of the fighters of the Legion in the computer game Hexen
• Ettins, a species in the Creatures series of computer games
• Ettin, a two-headed monstrous giant found in Ultima game series.
• Ettins, the name given by the Cimmerians (a Norse-descended people) to the Goa'uld in the TV series Stargate SG-1