The baby name Caius is a Male name , 2 syllables long and is pronounced /ˈkaɪ.əs/ (KAI-əs; sometimes KAY-əs).
Caius is Latin in Origin.
The baby name Caius is a Male name , 2 syllables long and is pronounced /ˈkaɪ.əs/ (KAI-əs; sometimes KAY-əs).
Caius is Latin in Origin.
Caius is a Latin praenomen, best known as an alternative spelling of Gaius, from the verb gaudere "to rejoice," yielding the meaning "rejoice" or "glad." It appears throughout Roman history - think Gaius Julius Caesar - and in early Christianity via several martyrs and a 3rd-century pope (Saint Caius). The name persisted in ecclesiastical and scholarly Latin, then re-entered English awareness through Renaissance humanists and John Caius, benefactor of Cambridge’s Gonville and Caius College.
Modern use has grown with the revival of classical names in the UK and US. Common variants include Gaius, Caio (Italian/Portuguese), Cayo (Spanish), and modern Kaius; related short forms are Cai and Kai. English speakers usually say KYE-us, though Latinists may approximate GAH-yoos for Gaius. The blend of antique gravitas and bright, celebratory meaning makes Caius a compact, distinguished choice.
Based on birth registration data from national statistics agencies.
| Country | Gender | Year | Rank | Born | of |
|---|---|---|---|---|---|
| EE | Boys | 0 | #124 | 2 | 2,087 |
| Switzerland | Boys | 2024 | #136 | 2 | 1,769 |
| Sweden | Boys | 2022 | #181 | 2 | 1,509 |
| France | Boys | 1925 | #217 | 3 | 746 |
| AO | Boys | 0 | #249 | 1 | 5,568 |
| NG | 0 | #272 | 1 | 5,926 | |
| SG | 0 | #280 | 3 | 11,010 | |
| Canada | Boys | 2024 | #287 | 20 | 2,588 |
| JM | Boys | 0 | #292 | 2 | 6,876 |
| CN | Boys | 0 | #330 | 2 | 9,639 |
| DK | Boys | 0 | #332 | 1 | 7,401 |
| MY | 0 | #354 | 1 | 12,352 | |
| PH | Boys | 0 | #406 | 3 | 11,440 |
| Finland | Boys | 0 | #411 | 17 | 2,041 |
| CL | 0 | #434 | 1 | 6,867 | |
| HK | Boys | 0 | #553 | 5 | 12,905 |
| CM | Boys | 0 | #574 | 2 | 12,054 |
| BH | 0 | #587 | 1 | 17,937 | |
| Finland | Boys | 2026 | #595 | 88 | 3,552 |
| SG | Girls | 0 | #632 | 1 | 18,916 |
| SG | Boys | 0 | #680 | 18 | 17,960 |
| United States | Boys | 2024 | #689 | 205 | 7,044 |
| BR | Boys | 0 | #779 | 7 | 12,213 |
| Spain | Boys | 0 | #921 | 10 | 5,610 |
| PE | Boys | 0 | #926 | 1 | 14,506 |
| NG | Boys | 0 | #928 | 24 | 16,906 |
| Germany | Boys | 0 | #942 | 11 | 5,697 |
| BR | Girls | 0 | #992 | 1 | 12,708 |
| MX | Boys | 0 | #1,032 | 2 | 16,355 |
| AE | Boys | 0 | #1,143 | 1 | 22,615 |
| MY | Boys | 0 | #1,180 | 3 | 25,439 |
| DZ | 0 | #1,234 | 1 | 20,130 | |
| TR | 0 | #1,254 | 1 | 19,440 | |
| ZA | Boys | 0 | #1,272 | 1 | 25,619 |
| IT | Boys | 0 | #1,443 | 29 | 10,046 |
Caius is popular in 29 countries — most recent births per country:
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