Dennis
Dennis is a male given name: 100% of people named Dennis are men, and it is recorded as male in 12 of the 12 countries covered.
- Verdict
- Male
- Male / female split
- 100% male / 0% female
- Confidence
- High (64 or more weighted country observations)
- Most common in
- United States, Great Britain, Denmark
- US births since 1880
- 617,425 male / 2,667 female
- Data
- nam_dict (GFDL) + US SSA
- Updated
- 2026-09-11
How to address Dennis
When you do not know their gender for certain, the full name with no title is the safe choice: "Dear Dennis," in English, "Guten Tag Dennis," in German. Dennis is a male given name: about 100% of people named Dennis are men. A quick look at a profile confirms it for certain.
Ready-made greetings in six languages
English
Dear Dennis,
German
Guten Tag Dennis,
French
Bonjour Dennis,
Spanish
Estimado/a Dennis:
Chinese
Dennis您好：
Japanese
Dennis様
English
Hi Dennis,
German
Hi Dennis,
French
Salut Dennis,
Spanish
Hola Dennis,
Chinese
Dennis你好：
Japanese
Dennis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 | 100% |
| Great Britain | common | man's name | 98% |
| Denmark | uncommon | man's name | 98% |
| Netherlands | uncommon | man's name | 98% |
| East Frisia | uncommon | man's name | 98% |
| Sweden | uncommon | man's name | 98% |
| Germany | uncommon | man's name | 98% |
| Belgium | rare | man's name | 98% |
| Malta | rare | man's name | 98% |
| Norway | rare | man's name | 98% |
| Switzerland | rare | man's name | 98% |
| Ireland | rare | man's name | 98% |
United States birth data
617,425 male · 2,667 female · 620,092 births recorded
Since 1980: 99% male.
Frequently asked questions
Is Dennis a male or female name?
Dennis is a male given name: 100% of people named Dennis are men, and it is recorded as male in 12 of the 12 countries covered.
How do I address Dennis in an email?
When you do not know their gender for certain, the full name with no title is the safe choice: "Dear Dennis," in English, "Guten Tag Dennis," in German. Dennis is a male given name: about 100% of people named Dennis are men. A quick look at a profile confirms it for certain.
Is Dennis a unisex name?
Dennis is not a unisex name: 100% of people named Dennis are men. Dennis 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 Dennis a male or female name?", https://dearwho.vercel.app/name/dennis (accessed 2026-09-11). Data: nam_dict (J. Michael, GFDL) and US SSA, built 2026-09-11.
BibTeX
@misc{dearwho_dennis,
title = {Is Dennis a male or female name?},
author = {{DearWho}},
year = {2026},
url = {https://dearwho.vercel.app/name/dennis},
note = {Data: nam_dict (GFDL), US SSA public domain}
}