57%RatingSave Gender Masculine Usage Norwegian Meaning & HistoryExpand Links From the Old Norse name Hallþórr, which meant "Thor's rock" from hallr "rock" combined with the name of the Norse god Þórr (see Thor). Related NamesFamily Tree·Details VariantHalldorOther Languages & CulturesHalldór(Icelandic) Hallþórr(Old Norse) People think this name isRate·Details classic mature formal strong rough strange serious Categories earth, mythology, Norway in the Eurovision Song Contest, stone, theophoric names