Halldorsson

Halldorsson is a surname most commonly found in Iceland and among people of Icelandic descent. In Icelandic usage, Halldórsson (the proper spelling) is a patronymic meaning "son of Halldór." The corresponding feminine form is Halldórsdóttir. Because Icelandic naming practice is patronymic rather than fixed family names, Halldórsson does not denote a single lineage in the way that surnames do in many other countries, and it can change with each generation.

Outside Iceland, or in Anglophone contexts, the name is frequently written as Halldorsson, with the accented ó dropped. The form Halldórsson is still seen in Icelandic contexts.

Halldór is a traditional Icelandic given name of Old Norse origin; Halldórsson thus literally identifies the bearer as a son of Halldór. The surname is widely borne by Icelanders and by members of the Icelandic diaspora, and it appears across fields such as sports, politics and culture due to the broad use of the given name Halldór in the population.

Notable individuals bearing Halldorsson (or Halldórsson) include athletes, politicians and artists in Icelandic public life, who are often listed in biographical databases simply by their given name and surname. The name is primarily associated with Icelandic identity and naming conventions rather than a single historic family.