Bjǫrn is an Old Norse masculine given name, directly derived from the noun bjǫrn meaning "bear." As a byname or personal name, it evokes the strength and ferocity associated with the animal in Norse culture, where bears were symbols of power and warrior spirit. Bjǫrn is the original Old Norse form that later evolved into the modern Scandinavian forms such as Björn (Swedish and Icelandic), Bjørn (Norwegian and Danish), and the Faroese variant Bjørn.The name is documented in Viking Age runestones and medieval sagas, often borne by legendary figures. For instance, the Swedish Viking Bjǫrn Járnsíða (Björn Ironside) who raided in the ninth century, represents a notable bearer in Norse history. The etymology ties directly to the Old Norse word for "bear," which itself stems from Proto-Germanic *berô, reflecting a widespread naming tradition of using animal totems across Germanic peoples.Related names include the diminutive Bjarni and the feminine Birna, while parallel forms exist in Danish Bjarke and Bjarne (Swedish/Norwegian), as well as the English adaptation Bear. Though submerged under later spelling variants, Bjǫrn remains an established root for one of Scandinavia's most enduring personal names.