You are not signed in. Sign in.

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

Share This Page:

Baby Genders

Alphabetical List

Name Origins

Boy Name: Gaius

Name: Gaius
Pronunciation: \gaius\
Gender / Sex: boy name boy
Meaning: happy, rejoice
Origin: Latin
Related Names: Jay
Sounds Like: Gus, Guus
Variant forms: Cai, Caio, Kay, Kaye, Keye, Keyes, Keys


Gaius \gaius\ as a boy's name is of Latin origin, and the meaning of Gaius is "happy, rejoice". Probably the root of the word "gay", which used to mean "jolly". Also a biblical name, and the name of a Roman jurist in the second century. Caius is a variant that occurs in England.

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

For more information, see also the related name Jay.

Baby names that sound like Gaius are Gus and Guus.

View a list of the 4 names that reference Gaius.


Gaius 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)

« Previous Name Gair
Next Name » Gal


No comments yet. Submit yours!

Feel free to comment on this page.

We would like to know what you think about this and publish your thoughts here! (top)

What say you?

  1. You may optionally give a title for this comment.

  2. Worst to best, 1 to 5, what would you rate this one?

  3. The actual content of your comment. No HTML nor whatsoever allowed.

  4. The author of this comment.

  5. 4 + 9 = ?

    Please answer the question by common sense.