Halfdan (, ,
Medieval ,
Proto-Norse:
*Halbadaniz, "half
Dane") was a late 5th and early 6th century
legendary Danish king of the
Scylding (Skjöldung) lineage, the son of king named
Fróði in many accounts, noted mainly as the father to the two kings who succeeded him in the rule of Denmark, kings named
Hroðgar and
Halga in the Old English poem
Beowulf and named Hróar and Helgi in Old Norse accounts.