Hallgrímsson
Hallgrímsson is a surname of Icelandic origin, meaning son of Hallgrímur. In Icelandic names, the name is not strictly a surname, but a patronymic. The name refers to:
- Asgeir Örn Hallgrimsson (b. 1984), Icelandic professional handball player
 - Benedikt Hallgrimsson (b. 1967), Icelandic-Canadian biological anthropologist and evolutionary biologist
 - Geir Hallgrímsson (1925–1990), Icelandic politician; Prime Minister of Iceland 1974–78; mayor of Reykjavík 1959–72
 - Hafliði Hallgrímsson (b. 1941), Icelandic composer
 - Jónas Hallgrímsson (1807–1845), Icelandic poet and author
 - Hallgrim Eagle Hallgrimsson, fictional police officer from the Danish TV Series The Eagle: A Crime Odyssey
 - Heimir Hallgrímsson, an Icelandic football manager and former player
 - Matthías Hallgrímsson (born 1946), Icelandic footballer