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Smart Baby Names: Dictionary of Baby Names, Meanings and Origins.

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Boy Name: Caius

Name: Caius
Pronunciation: \caius\
Gender / Sex: boy name boy
Meaning: rejoice
Origin: Latin
Sounds Like: Cass, Gus, Guus, Case, Casey, Cayce, Cacey, Cace, Caz, Kass
Variant forms: Cai, Caio, Kay, Kaye, Keye, Keyes, Keys


Caius \caius\ as a boy's name is pronounced keys. It is of Latin origin, and the meaning of Caius is "rejoice". Variant of Gaius. A 16th-century English physician endowed a college at Cambridge University called "Gonville and Caius".

Caius has 7 variant forms: Cai, Caio, Kay, Kaye, Keye, Keyes and Keys.

Baby names that sound like Caius are Cass, Gus, Guus, Case, Casey, Cayce, Cacey, Cace, Caz and Kass.

View a list of the 3 names that reference Caius.


Caius is not a popular first name for men and an equally uncommon surname or last name for both men and women. (1990 U.S. Census)

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