Grétarsson

Grétarsson is an Icelandic patronym, meaning son of Grétar. Notable people with the last name include:
 * Arnar Grétarsson (born 1972), Icelandic football manager and former footballer
 * Daníel Leó Grétarsson (born 1995), Icelandic footballer
 * Helgi Grétarsson (born 1977), Icelandic chess grandmaster
 * Hilmar Grétarsson (born 1982), Icelandic journalist
 * Hjörvar Steinn Grétarsson (born 1993), Icelandic chess grandmaster
 * Reynir Grétarsson (born 1972), Icelandic businessman
 * Sigurður Grétarsson (born 1962), Icelandic football manager and former footballer