Fjalar Þorgeirsson (born 18 January 1977) is an Icelandic footballer who currently plays for Valur in the Icelandic Úrvalsdeild.
In Norse mythology, Gálgviðr (Old Norse "gallows-wood") is a forest in Jotunheim, land of the jötnar, from which the rooster Fjalar is foretold to begin crowing during the onset of Ragnarok.