Halfdan (name)
Halfdan is an Old Norse masculine given name. In Beowulf it is spelled Healfdene, and in Latin sources Haldan. It may refer to:
Mythical figures:
- Halfdan, legendary king of the Scyldings in Beowulf, who also appears in Norse mythology
- Halfdan the Old, ancient legendary king
- Halfdan Hvitbeinn, mythical petty king in Norway
- Halfdan the Valiant, legendary father of Ivar Vidfamne
- Hálfdan Brönufostri, subject of the legendary saga Hálfdanar saga Brönufóstra
- Halfdan Eysteinsson, subject of the legendary saga Hálfdanar saga Eysteinssonar
- Halfdan (floruit 782–807), Danish client of the Franks
- Halfdan the Black, father of Harald I of Norway
- Halfdan Ragnarsson, Viking, leader of the Great Heathen Army
- Halfdan, possible name of the author of an inscription on a Hagia Sofia parapet
- Halfdan Haraldsson the Black, Norwegian petty king and grandson of Halfdan the Black
- Halfdan, a joint King of Northumbria – see Eowils and Halfdan
- Halfdan the Mild, son of King Eystein Halfdansson, of the House of Yngling
- Halfdan Bryn, Norwegian physician and physical anthropologist
- Halfdan Christensen, Norwegian stage actor and theatre director
- Halfdan Olaus Christophersen, Norwegian historian of ideas, non-fiction writer and World War II resistance member
- Halfdan E, Danish film and television composer
- Halfdan Egedius, Norwegian painter and illustrator
- Halfdan Wexel Freihow, Norwegian literary critic, novelist, editor and book publisher
- Halfdan Hegtun, Norwegian radio personality, comedian and writer, and politician
- Halfdan Holth, Norwegian veterinarian and professor
- Halfdan Jønsson, Norwegian trade unionist and World War II resistance member
- Halfdan Kjerulf, Norwegian composer
- Halfdan Lehmann, Norwegian government official
- Halfdan T. Mahler, Danish medical doctor and three-term director-general of the World Health Organization
- Halfdan Nielsen, Norwegian speedskater who set the world record in the 10,000 m in 1893
- Halfdan Rasmussen, Danish poet
- Halfdan Strøm, Norwegian painter
- Halfdan Sundt, Norwegian physician and politician