Sebastian
Sebastian is a male given name: 100% of people named Sebastian are men, and it is recorded as male in 13 of the 13 countries covered.
Sebastian · Sébastian · Sebastián
- Verdict
- Male
- Male / female split
- 100% male / 0% female
- Confidence
- High (64 or more weighted country observations)
- Most common in
- United States, Germany, Austria
- Also spelled
- Sébastian, Sebastián
- US births since 1880
- 144,361 male / 312 female
- Data
- nam_dict (GFDL) + US SSA
- Updated
- 2026-09-11
How to address Sebastian
When you do not know their gender for certain, the full name with no title is the safe choice: "Dear Sebastian," in English, "Guten Tag Sebastian," in German. Sebastian is a male given name: about 100% of people named Sebastian are men. A quick look at a profile confirms it for certain.
Ready-made greetings in six languages
English
Dear Sebastian,
German
Guten Tag Sebastian,
French
Bonjour Sebastian,
Spanish
Estimado/a Sebastian:
Chinese
Sebastian您好：
Japanese
Sebastian様
English
Hi Sebastian,
German
Hi Sebastian,
French
Salut Sebastian,
Spanish
Hola Sebastian,
Chinese
Sebastian你好：
Japanese
Sebastian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% |
| Germany | uncommon | man's name | 98% |
| Austria | uncommon | man's name | 98% |
| Spain | uncommon | man's name | 98% |
| Poland | uncommon | man's name | 98% |
| East Frisia | uncommon | man's name | 98% |
| Romania | uncommon | man's name | 98% |
| Switzerland | rare | man's name | 98% |
| Denmark | rare | man's name | 98% |
| Ireland | rare | man's name | 98% |
| Belgium | rare | man's name | 98% |
| Great Britain | rare | man's name | 98% |
Show all 13 countries
| Country | How common | Usually | Male share |
|---|---|---|---|
| Malta | rare | man's name | 98% |
United States birth data
144,361 male · 312 female · 144,673 births recorded
Since 1980: 100% male.
Frequently asked questions
Is Sebastian a male or female name?
Sebastian is a male given name: 100% of people named Sebastian are men, and it is recorded as male in 13 of the 13 countries covered.
How do I address Sebastian in an email?
When you do not know their gender for certain, the full name with no title is the safe choice: "Dear Sebastian," in English, "Guten Tag Sebastian," in German. Sebastian is a male given name: about 100% of people named Sebastian are men. A quick look at a profile confirms it for certain.
Is Sebastian a unisex name?
Sebastian is not a unisex name: 100% of people named Sebastian are men. Sebastian 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 Sebastian a male or female name?", https://dearwho.vercel.app/name/sebastian (accessed 2026-09-11). Data: nam_dict (J. Michael, GFDL) and US SSA, built 2026-09-11.
BibTeX
@misc{dearwho_sebastian,
title = {Is Sebastian a male or female name?},
author = {{DearWho}},
year = {2026},
url = {https://dearwho.vercel.app/name/sebastian},
note = {Data: nam_dict (GFDL), US SSA public domain}
}