What does Thor mean?
Thor is the Norse god of thunder, his name meaning “thunder” itself.
What does Viggo mean?
Viggo comes from the Old Norse for “war” or “battle.”
Thor vs Viggo
Which is more popular?
Viggo is more popular than Thor today: about 97 US babies were given the name Viggo in 2025, compared with 44 named Thor.
| Thor | Viggo | |
|---|---|---|
| Meaning | Thunder | War |
| Origin | Norse | Norse |
| Gender | Boy | Boy |
| Pronunciation | THOR | VEE-goh |
| Syllables | 1 | 2 |
| First appeared | 1904 | 1913 |
| Peak year | 2015 (118) | 2025 (97) |
| In 2025 | 44 | 97 |
| Trend | Steady | Near its peak |
Popularity over time, 1880–2025
Thor
Viggo
Source: US Social Security Administration.
Births by decade
| Decade | Thor | Viggo |
|---|---|---|
| 2020s | 415 | 447 |
| 2010s | 1,026 | 402 |
| 2000s | 699 | 179 |
| 1990s | 498 | 0 |
| 1980s | 469 | 0 |
| 1970s | 538 | 0 |
| 1960s | 568 | 0 |
| 1950s | 208 | 0 |
| 1940s | 137 | 0 |
| 1930s | 91 | 5 |
| 1920s | 117 | 10 |
| 1910s | 86 | 12 |
| 1900s | 5 | 0 |
Frequently asked questions
Is Thor or Viggo more popular?
Viggo is more popular than Thor today: about 97 US babies were given the name Viggo in 2025, compared with 44 named Thor.
What is the difference between Thor and Viggo?
Thor means Thunder (Norse origin), while Viggo means War (Norse origin).
Which name is older, Thor or Viggo?
In US records, Thor first appears in 1904 and Viggo in 1913, so Thor has the longer recorded history.