Ragnar is an Old Norse name meaning "warrior's judgment" or "army's judgment" — and it received a massive pop culture boost from the TV series Vikings, where Ragnar Lothbrok is the charismatic, ambitious protagonist. For a male dog, it's a name that carries Viking-era weight with direct television backing.
The Vikings TV Effect
Vikings (2013–2020) put Ragnar Lothbrok in front of a global audience for seven seasons, and the name migrated almost immediately into pet registries. The pattern is familiar: popular TV character with an unusual name, wave of pets named after the character, slow decline as the show recedes. Ragnar is still riding the show's cultural tail.
Norse Name Revival
Ragnar belongs to the broader Norse name revival in pet naming — alongside Odin, Thor, and Loki, all of which substantially outrank it. The Norse cluster benefits from a general appetite for strong, mythological, pre-Christian names that carry history without requiring explanation. Ragnar sits at the more specific end — it's the TV character more than the mythology.
Breed Fit
Norwegian Elkhounds, Swedish Vallhunds, or any Nordic breed carries Ragnar with particular geographic coherence. A large, assertive dog in any breed works; the name needs physical backing to land without irony.
The Counter-Reading: Locked to One Era
Ragnar will date the dog to the mid-2010s Vikings era in a way that Thor and Odin, being mythological, don't. That's a minor issue over a dog's lifespan but worth noting.