List of Famous people named Halfdan

Halfdan the Black was a ninth-century king of Vestfold. He belonged to the House of Yngling and was the father of Harald Fairhair, the first king of a unified Norway.

Halfdan Theodor Mahler was a Danish physician. He served three terms as director-general of the World Health Organization (WHO) from 1973 to 1988, and is widely known for his effort to combat tuberculosis and his role in having shaped the landmark Alma Ata Declaration that defined the Health for All by the Year 2000 strategy.

Halfdan Kjerulf was a Norwegian composer.

Halfdan Wedel Rasmussen was a Danish poet. He was known for his literary nonsense verse for children and his serious adult writings about social issues and human rights. He was awarded with the Ministry of Culture's children book prize in 1965.

Halfdan Whiteshanks was a semi-historical petty king in Norway, described in the Ynglinga saga. The following description is based on the account in Ynglinga saga, written in the 1220s by Snorri Sturluson. The historicity of the kings described in that saga is generally not accepted by modern historians.

Halfdan the Valiant was a legendary Scanian prince, who was the father of Ivar Vidfamne according to Hervarar saga, the Ynglinga saga, Njal's Saga and Hversu Noregr byggdist. The genealogical work Hversu Noregr byggdist gives his father as Harald the Old, his grandfather as Valdar and his great-grandfather as Hróarr.

Halfdan E is a Danish film composer. His work has won two Danish Grammy Awards and three Danish Robert Awards. His music for the television series Borgen has also won the 2011 FIPA prize.