This list of Dubious Danish Kings is half history and half legendary. (in Danish)

• Hrothgar (Roar)
• Ongendus (Angantyr) d. 728
• Helgi (Helge) legendary 728-?
• Siger legendary

Budle father of Gudfred perhaps not a king.

• Sigfrid , mention 776- d. before 804
  • Harold, Norway?
• Gudfred (Gudrød Vejdekonge) latest 804- d. 810
  • Eyetein fart (Eyetein Fjært) of Västergötland?
  • Halfdan (Halvdan) Norway?
• Hemming d. 811
• Anulo (Ole/Olav) d. 812
• Sigfrid (Sigurd) d. 812
• Harold 812-815 (died ca 863 by exile)
  • Reginfrid 812-814?
• Eric the Child (Erik Barn) o. 812 - d. 854
  • Halfdan (Halvdan) o. 812-? (possibly died by exile)
• Eric the younger (Erik den Yngre) ca. 854- mention 864, (possibly d. 873)
  • Harold (Harald Hårfager ) o. 871- d. o. 933 by Norweg
• Uffe (Ubbe) possibly o. 873 (died by exile)
• Sigfrid "Snake eye" (Sigurd Orm i Øje) mention 873- d. 903, do coin money by East Anglia.
  • Halfdan (Halvdan) mention 873- d. 876/877
  • Godred alias Canute (Harde-Knud/Gudfred/Gudrød) ca. 881- d. 895/896 of Northumbria and do coin money by East Anglia.
• Helgi ? - ?
• Olof the Brash (Olav/Ole den Frøkne) mention o. 925
• Gurd  ?
• Canute (Knud/Chnuba) mention 934
• Sigerich (Sigtryg) about 935
• Gothrum the English or Worm (Gorm den Gamle / Gorm den Engelske) mention 936- earliest d. 958
• Harold Bluetooth (Harald Blåtand) earliest 944- d. latest 987
• Sweyn I Forkbeard alias Otto (Svend Tveskæg) d. 1014
• Harald only known from Saxo 1014-1018
• Canute the Great alias Lambert (Knud den Store) * 1014/1018-1035

See also

For other lists of Scandinavian kings, see e.g.

• Mythological kings of Sweden
• Semi-legendary kings of Sweden