Rising since 2005, #1,028 for boys today.
Popularity of Kaius since 2005
Babies named Kaius per year in U.S. Social Security records.
Data table (by decade)
| Decade | Boys |
|---|---|
| 2000s | 54 |
| 2010s | 807 |
| 2020s | 1,150 |
Meaning & origin
Kaius is a modern name that entered U.S. records in 2005, and it has been steadily rising in popularity since then. In 2025, it ranked 1,028, with an estimated 1 in 7,908 boys receiving the name. Its peak year so far is also 2025, indicating continued upward momentum. The name is most popular in Louisiana, Wisconsin, and Missouri. Though its etymology is debated, it is often seen as a Latinized spelling of Kai or a twist on the ancient Roman name Caius. Its fresh sound and concise structure align with contemporary naming trends favoring short, vowel-heavy names.
Kaius is a modern given name that first appeared in U.S. records in 2005. It is likely a Latinized spelling of Kai, a name with multiple origins (Hawaiian, Scandinavian, Japanese, etc.). Alternatively, it may be a variant of Caius, a Latin name with an uncertain etymology but often linked to the Latin word 'gaudere' (to rejoice). The name has seen consistent but modest use in the United States.
Where Kaius is most popular
Births per 100,000 boys by state, 2025. The lightest shade means too few recorded births.
Nicknames & variants
Nicknames: Kai
Sibling names for Kaius
Names that share Kaius's style, for a brother or sister.
