No confirmed Viking-age combat helmet has horns. The famous image was popularised much later through art, theatre and costume design. Horned ceremonial objects existed in other times and places, which may have helped the myth grow.
What we found
Archaeologists have found very few complete Viking helmets, but the surviving examples and contemporary images do not show battle horns. Horns would also be awkward in close combat. Nineteenth-century artists wanted dramatic visual symbols and created a style that became familiar in opera, illustration and advertising. Repetition made the costume feel historical even though the evidence says otherwise. The Ridbusters then compare the wording with the original sources, look for the conditions of each observation and check whether another explanation could fit. That turns a surprising headline into a trail a young investigator can follow: claim, test, result and remaining uncertainty. No confirmed Viking-age combat helmet has horns.