Cosimo
How to say it: KOH-zee-moh · /ˈkoʊzimoʊ/
Italian name from Greek 'kosmos' meaning 'order, decency' - historic Medici name in Florence.
Cosimo was the 1,416th most popular boys’ name in the United States in 2025, given to 16 babies (Social Security Administration). Its busiest decade was the 1920s, its births are up 2.2-fold in ten years, and it is projected to rise to #1,092 by 2030.
Updated · SSA 2025 data, published May 2026 · Insee 2025 data, published July 2026 · How we compute these figures
Key facts
| Rank among boys’ names, 2025 | #1,416 |
|---|---|
| Babies born in 2025 | 16 |
| Share of births | 1 in 34,534 |
| Peak decade | 1920s |
| Change over 10 years | ×2.2 |
| Projected rank for 2030 (estimate) | #1,092 |
| In France, 2025 | #1,110 among boys’ names, 5 births |
Sources: Social Security Administration (SSA), Insee (France). How we compute these figures.
Its life, decade by decade
Cosimo peaked in the 1920s, nearly vanished by the 1970s, and has come back.
What goes with it
In the classroom
In a class of 25 children born in 2025, the chance that another child is called Cosimo is about under 1 in 200.
Around the world
This spelling is used in English, French, Greek, Italian.
In France: #1,110 for boys in 2025.
Famous people named Cosimo
- Cosimo de' Medici (1389–1464)First ruler of the Medici political dynasty
- Cosimo I de' Medici, Grand Duke of Tuscany (1519–1574)Duke of Florence
- Cosimo Rosselli (1439–1507)Italian painter
From Wikidata and Wikipedia
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