Gaius
Meaningrejoice · Latin
- US rank
- #3,583
- Syllables
- 2
- Peak
- #2,805 in 2014
31 babies were named Gaius in the US in 2025. It has dropped 13 places in five years.
Save adds it to your list. Vote moves it up the top voted names.
US births per million boys, 1920–2025
Similar names
Popularity: U.S. Social Security Administration (babies with 5+ births per year).
Did you know?
A few things about Gaius you might not know, from US birth records and Wikipedia. Handy for convincing a partner, or a grandparent.
Famous Gaius
Gaius Charles
American actor
Choose Gaius and your child shares a first name with Gaius Charles, an American actor. A ready-made answer when someone asks “Gaius, like who?” Gaius Charles's Wikipedia article is available in 20 languages, a good sign of just how widely known they are.
Read about Gaius Charles on Wikipedia (opens in a new tab)Photo: Gage Skidmore, CC BY-SA 3.0 (opens in a new tab), via Wikimedia Commons
- How commonAbout 1 in every 55,249 baby boys born in the US in 2025 was named Gaius, 31 babies in all. In a typical school of 500 kids, your Gaius would very likely be the only one.
- HistoryGaius first shows up in US birth records in 1920, the first year at least 5 babies got it. It has been in use for 105 years since.
- Best yearIts best year was 2014, when it reached #2,805.
- MeaningIn Latin, Gaius means “rejoice”. Our records link it to Latin and Welsh roots.
About the name Gaius
Gaius is a boy name of Latin and Welsh origin meaning “rejoice”. It has 5 letters and 2 syllables, starting with G and ending in “-ius”. US birth records list Gaius for boys from 1920 to 2025, in 34 of those 106 years. Its best year was 2014, when it ranked #2,805 among boy names. In 2025 it ranked #3,583, with 31 babies.
Origin:Latin namesWelsh names
| Decade | Babies per million | About 1 in |
|---|---|---|
| 1920s | 1.4 | 719,424 boys |
| 1930s | 1.0 | 1,020,408 boys |
| 1940s | 0.8 | 1,298,701 boys |
| 1950s | 0.3 | 4,000,000 boys |
| 1970s | 0.7 | 1,369,863 boys |
| 1980s | 0.6 | 1,785,714 boys |
| 1990s | 0.3 | 3,846,154 boys |
| 2000s | 3.9 | 253,807 boys |
| 2010s | 12 | 82,034 boys |
| 2020s | 15 | 68,571 boys |
More Latin boy names
- Boy name: Oliver · olive tree
- Boy name: Theodore · gift of God
- Boy name: Lucas · man from Lucania
- Unisex name: Elias · my God is Yahweh
- Unisex name: Luca · man from Lucania
- Boy name: Sebastian · venerable
- Boy name: Leo · lion
- Boy name: Alexander · defender of men
Questions about the name Gaius
What does the name Gaius mean?
Gaius means “rejoice” in Latin.
What is the origin of the name Gaius?
Gaius has Latin, Welsh roots in our records. Other Latin names include Oliver, Theodore, Lucas.
Is Gaius a boy or girl name?
Gaius is a boy name.
How popular is the name Gaius?
Gaius ranked #3,583 for US boys in 2025, given to 31 babies. Its best year was 2014 (#2,805).