(VIGG-oh) Viggo Mortensen, who is actually a junior, may be the first and only person that comes to mind with this name. The actor has been known for his roles in "Hidalgo" and "Lord of the Rings." Many don't know about Prince Viggo of Denmark, Count Viggo of Rosenborg, who gave up the wonders of being a prince for his American wife in the 1920's.
This Scandinavian name meaning "war; thunderbolt" should be way more popular than it is. It's got the trendy V and O sounds, a short and peppy sound, an actor namesake... so how come in 2011 there were only 31 boys given the name and in 2010 only 41? This Old Norse name dates back to the time of the Vikings and is very popular in Sweden (#32), a bit dated (I'm not so sure - it's #288 there) in Norway. It was even catchy enough for Taylor Hanson and his wife to use for their fourth child (the others are Jordan, Penelope and River), once they found it on Ancestry.com. The most similar sounding name out there is Vega, which is also quite rare.