Kaius

Meaning: Rejoicing
Origin: Variant of Gaius · from Proto-Indo-European *geh₂w- 'to rejoice' (from Latin)

Boy's name · #1029 in the US (2025) · Trending

Popularity over time

The whole story of Kaius fits in one generation — unrecorded before 2005, about 2,000 boys since, and a 2025 rank of #1029 (220 newborns last year).

Across the states

See where Kaius is more common.

Appears in 2020-2025 birth records of 22 states. See the full state-by-state map on this page.

Around the world

See how Kaius ranks in other countries and regions.

#1,210 in England & Wales (2025) · #1,021 in Canada (2024).

Famous Kaiuses

Kaius Simojoki — Finnish footballer (born 2006)

Spellings & nicknames

Together with its spelling variant Caius (#927), Kaius would rank around #605 with about 470 births last year — the newborns split about 54/46 between Caius and Kaius.

Similar names: Caius · Aurelius · Kaycen · Scout · Tidus · Lux

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