Caio
Caio is a Portuguese masculine given name derived from the Latin name Gaius.
Meaning & Origin of Caio
What this name means, where it came from, and how it has traveled across cultures.
Caio is a Portuguese masculine given name derived from the Latin name Gaius.
Source: Wikipedia (CC BY-SA 3.0). Read more →
The Story of Caio
Caio first appeared in U.S. Social Security Administration records as a baby boy name in 1990, with 6 babies given the name that year. Its peak popularity came in 2023, when 40 Caios were born — ranking #3,052 that year. As of 2026, Caio ranks #3,365 for baby boys with 35 births, rising sharply (+15% over the past five years). In total, more than 756 Caios have been born in the U.S. since records began in 1880, spanning the 1990s through the 2020s.
Popularity Over Time
Popularity by State
Names that sound like Caio
Phonetically similar names — useful when Caio is the vibe but a different syllable count or letter feel might suit better. Linked entries have a profile on Peek a Name.
Source: Datamuse . Phonetic similarity ranking, not curated.
Frequently Asked Questions about Caio
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About the name Caio
Caio is a boy baby name tracked by the U.S. Social Security Administration. It first appeared in SSA records in 1990 and has accumulated 756 births in the dataset. Caio's peak popularity came in 2023 when it ranked #3,052. Use the chart and map above to compare Caio's trajectory across years and U.S. states, or browse the related names section to discover similar choices.
Continue exploring
- Top names of 2023 →
- Names of the 2020s →
- Names starting with "C" →
- Browse all boy names →
- Top names of 2026 →
Data sources
- Birth statistics (counts, ranks, years 1880–2026) — U.S. Social Security Administration . Predictions for years not yet released by SSA are computed by Peek a Name from historical trends; we update with official data as soon as it ships.
- Etymology, cultural origins, and related forms — Behind the Name (used under their public API terms).
- Meaning prose and editorial summary — Wikipedia article extracts, licensed under CC BY-SA 3.0 .
- Predicted nationality distribution — Nationalize.io .
- Phonetically similar names — Datamuse .
Peek a Name aggregates and presents the above data for informational purposes. Statistical predictions and external attributions are clearly labelled where shown; we make no guarantee of accuracy beyond what each source provides.