Sergei
Sergei is a male given name: 98% of people named Sergei are men, and it is recorded as male in 10 of the 10 countries covered.
- Verdict
- Male
- Male / female split
- 98% male / 2% female
- Confidence
- High (64 or more weighted country observations)
- Most common in
- Belarus, Russia, Ukraine
- US births since 1880
- 352 male / 0 female
- Data
- nam_dict (GFDL) + US SSA
- Updated
- 2026-09-11
How to address Sergei
When you do not know their gender for certain, the full name with no title is the safe choice: "Dear Sergei," in English, "Guten Tag Sergei," in German. Sergei is a male given name: about 98% of people named Sergei are men. A quick look at a profile confirms it for certain.
Ready-made greetings in six languages
English
Dear Sergei,
German
Guten Tag Sergei,
French
Bonjour Sergei,
Spanish
Estimado/a Sergei:
Chinese
Sergei您好：
Japanese
Sergei様
English
Hi Sergei,
German
Hi Sergei,
French
Salut Sergei,
Spanish
Hola Sergei,
Chinese
Sergei你好：
Japanese
Sergei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 |
|---|---|---|---|
| Belarus | very common | man's name | 98% |
| Russia | very common | man's name | 98% |
| Ukraine | very common | man's name | 98% |
| Estonia | common | man's name | 98% |
| Kazakhstan and Uzbekistan | common | man's name | 98% |
| Azerbaijan | uncommon | man's name | 98% |
| Israel | uncommon | man's name | 98% |
| Bulgaria | rare | man's name | 98% |
| United States | rare | man's name | 100% |
| Armenia | rare | man's name | 98% |
United States birth data
352 male · 0 female · 352 births recorded
Since 1980: 100% male.
Frequently asked questions
Is Sergei a male or female name?
Sergei is a male given name: 98% of people named Sergei are men, and it is recorded as male in 10 of the 10 countries covered.
How do I address Sergei in an email?
When you do not know their gender for certain, the full name with no title is the safe choice: "Dear Sergei," in English, "Guten Tag Sergei," in German. Sergei is a male given name: about 98% of people named Sergei are men. A quick look at a profile confirms it for certain.
Is Sergei a unisex name?
Sergei is not a unisex name: 98% of people named Sergei are men. Sergei 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 Sergei a male or female name?", https://dearwho.vercel.app/name/sergei (accessed 2026-09-11). Data: nam_dict (J. Michael, GFDL) and US SSA, built 2026-09-11.
BibTeX
@misc{dearwho_sergei,
title = {Is Sergei a male or female name?},
author = {{DearWho}},
year = {2026},
url = {https://dearwho.vercel.app/name/sergei},
note = {Data: nam_dict (GFDL), US SSA public domain}
}