Leo
Leo is a male given name: 99% of people named Leo are men, and it is recorded as male in 22 of the 24 countries covered.
Leo · Léo · Leó
- Verdict
- Male
- Male / female split
- 99% male / 1% female
- Confidence
- High (64 or more weighted country observations)
- Most common in
- United States, Netherlands, Denmark
- Also spelled
- Léo, Leó
- US births since 1880
- 198,092 male / 1,930 female
- Data
- nam_dict (GFDL) + US SSA
- Updated
- 2026-09-11
How to address Leo
When you do not know their gender for certain, the full name with no title is the safe choice: "Dear Leo," in English, "Guten Tag Leo," in German. Leo is a male given name: about 99% of people named Leo are men. A quick look at a profile confirms it for certain.
Ready-made greetings in six languages
English
Dear Leo,
German
Guten Tag Leo,
French
Bonjour Leo,
Spanish
Estimado/a Leo:
Chinese
Leo您好：
Japanese
Leo様
English
Hi Leo,
German
Hi Leo,
French
Salut Leo,
Spanish
Hola Leo,
Chinese
Leo你好：
Japanese
Leoさん
This is a statistical estimate, not a statement about the gender, identity or correct form of address of any particular person.
Country breakdown
| Country | How common | Usually | Male share |
|---|---|---|---|
| United States | very common | man's name | 99% |
| Netherlands | common | man's name | 98% |
| Denmark | uncommon | man's name | 98% |
| Austria | uncommon | man's name | 98% |
| Belgium | uncommon | man's name | 98% |
| Switzerland | uncommon | man's name | 98% |
| Estonia | uncommon | man's name | 98% |
| Finland | uncommon | man's name | 98% |
| Iceland | uncommon | man's name | 98% |
| Luxembourg | uncommon | man's name | 75% |
| Czech Republic | rare | man's name | 98% |
| Germany | rare | man's name | 98% |
Show all 24 countries
| Country | How common | Usually | Male share |
|---|---|---|---|
| France | rare | man's name | 75% |
| East Frisia | rare | man's name | 98% |
| Croatia | rare | man's name | 98% |
| Ireland | rare | man's name | 98% |
| Italy | rare | man's name | 98% |
| Latvia | rare | man's name | 98% |
| Bosnia and Herzegovina | rare | man's name | 98% |
| Great Britain | rare | man's name | 98% |
| Israel | rare | man's name | 98% |
| Sweden | rare | man's name | 98% |
| Slovenia | rare | man's name | 98% |
| Norway | rare | man's name | 98% |
United States birth data
198,092 male · 1,930 female · 200,022 births recorded
Since 1980: 100% male.
Frequently asked questions
Is Leo a male or female name?
Leo is a male given name: 99% of people named Leo are men, and it is recorded as male in 22 of the 24 countries covered.
How do I address Leo in an email?
When you do not know their gender for certain, the full name with no title is the safe choice: "Dear Leo," in English, "Guten Tag Leo," in German. Leo is a male given name: about 99% of people named Leo are men. A quick look at a profile confirms it for certain.
Is Leo a unisex name?
Leo is not a unisex name: 99% of people named Leo are men. Leo leans strongly male overall.
Related names
Sources
Gender by country: nam_dict, the c't first-names dictionary by Joerg Michael, roughly 44,000 names across 55 countries, licensed GFDL. US frequencies: United States Social Security Administration baby-name data, public domain. Method: how we classify names. Full dataset: data & licences. Data built 2026-09-11.
DearWho, "Is Leo a male or female name?", https://dearwho.vercel.app/name/leo (accessed 2026-09-11). Data: nam_dict (J. Michael, GFDL) and US SSA, built 2026-09-11.
BibTeX
@misc{dearwho_leo,
title = {Is Leo a male or female name?},
author = {{DearWho}},
year = {2026},
url = {https://dearwho.vercel.app/name/leo},
note = {Data: nam_dict (GFDL), US SSA public domain}
}