Caio

“rejoice, happy”

Portugal origin · Boy name

♂ 97% boys♀ 3% girls

#3063US 2023

40Births / yr

↑Rising

556All-time births

📅 Since 199000

How to pronounce Caio

KAH·EYE·oh

/ˈkɑ.ˈaɪ.oʊ/ · stress on KAH · 3 syllables

“rejoice, happy”

Portugal origin · Boy name

What does Caio mean and where does it come from?

Caio is a popular male name in Portuguese-speaking countries, particularly in Brazil and Portugal. It originates from the Latin name 'Gaius', which is linked to the meaning of joy and happiness. The name has ancient roots, with notable historical figures including individuals from Roman times. Caio

Cultural significance

Caio has been a cherished name across cultures, particularly in Portugal-speaking communities, where it reflects values of rejoice, happy.

Peak popularity

Reached #3381 in 2019 — currently #3063 in the US.

🌿

How else can you spell Caio?

Same sound, different look — useful if you want something slightly more distinctive

Kaio

Spelling variant

What middle names flow best with Caio?

Caio works best with short, strong middle names — one or two syllables keep the full name from becoming a mouthful

Caio Grace

How popular is Caio right now?

Rising fast — up 723 spots — currently #3063 in the US out of 135.5k tracked names

US Trend 1990–2023#3063 · Top 2.3%

1990

1995

2000

2005

2010

2015

2020

2021

2022

2023

Year	US Rank	Births	vs Prior Year
2023	#3063	40	▲ up 723 · +38% births
2022	#3786	29	▼ down 279 · -9% births
2021	#3507	32	▲ up 668 · +33% births
2020	#4175	24	▲ up 184 · +4% births
2015	#4359	23	▼ down 760 · -23% births
2010	#3599	30	▲ up 434 · +30% births
2005	#4033	23	▲ up 2163 · +109% births
2000	#6196	11	▼ down 746
1995	#5450	11	▲ up 2522 · +83% births
1990	#7972	6	—

Name Popularity Timeline

Popularity Statistics for Caio

Best Year2023Rank #3063

Peak Count40

Average Rank#4614

Current Trend↗Rising

Data Range1990 - 202310 years

The story of Caio

Caio is a relatively modern name, first appearing in US records in 1990. With 556 total births recorded, Caio remains relatively uncommon. The name has grown more popular over time, rising from #7972 in 1990 to #3063 in 2023.

Names that peaked alongside Caio in 2019:

Liam Noah Oliver William Elijah

Caio by decade

Caio peaked in the 2010s. See all 2010s names →

Decade	Births
1990s	73
2000s	209
2010s ★	250
2020s	24

💎Caio has only 556 total recorded births since 1990 — rarer than 99% of names in our database.

What are good nicknames for Caio?

Common

CaiieCaiy

What names sound and feel like Caio?

Based on sound, origin, and style — parents who love Caio also consider these

Italy · meaning unclear, possibly

Haio

Hebrew · A Hebrew name

Taio

Japan · In Japanese, the

Cario

Italy · From the city

Casio

Japan · Japanese

How is Caio written in other languages?

What are the girl versions of Caio?

Gaja POLISH Kaja POLISH Gaja SLOVENE Kaja SLOVENE Cai ARTHURIAN ROMANCE Kay ARTHURIAN ROMANCE Cai WELSH MYTHOLOGY Kay WELSH MYTHOLOGY

Common questions about the name Caio

What does the name Caio mean?

Caio means "rejoice, happy" — a name rooted in Portugal tradition that carries both historical depth and timeless appeal. The meaning reflects values that have made this name endure across generations.

How popular is the name Caio?

Caio is currently a distinctive and less common name as a boy name in the US and is rapidly gaining popularity — searches for Caio have increased significantly in recent years.

What is the cultural origin of Caio?

Caio originates from Portugal tradition. Portugal names tend to carry strong cultural heritage and have spread across the world through migration, literature, and religion over centuries.

How do you pronounce the name Caio?

Caio is a three-syllable name pronounced K AA1 AY1 OW0. The pronunciation is straightforward for English speakers, and the name reads clearly on paper — an important practical consideration for parents.

What sibling names go well with Caio?

Caio pairs beautifully with sibling names that share a similar Portugal heritage or complement its melodic and flowing sound. Names with a similar vibe create a cohesive sibling set without matching too closely.