Halldórsson is a surname of Icelandic origin, meaning son of Halldór. In Icelandic names, the name is not strictly a surname, but a patronymic. Notable people with the name include: Björgvin Halldórsson (1951–2026), Icelandic pop singer Björn Halldórsson (1724–1794), Icelandic priest and author Hannes Þór Halldórsson (born 1984), Icelandic football player Haukur Halldórsson (1937–2024), Icelandic painter Jón Halldórsson (bishop) (1275–1339), Norwegian-born Icelandic Roman Catholic clergyman; Bishop of Iceland 1322–39 Óskar Halldórsson (1921–1983), Icelandic scholar of Icelandic sagas