Ko
Ko is a unisex given name: about 58% of people named Ko are men and 42% are women, so a gendered salutation is a coin flip and the neutral form is the safe choice.
This name is used for both men and women without a strong lean either way.
- Verdict
- Unisex
- Male / female split
- 58% male / 42% female
- Confidence
- Medium (8 to 63 weighted country observations)
- Most common in
- Japan, Korea, Netherlands
- Data
- nam_dict (GFDL) + US SSA
- Updated
- 2026-09-11
How to address Ko
To address Ko when you do not know their gender, use the full name with no title: "Dear Ko," in English, "Guten Tag Ko," in German. About 58% of people named Ko are men and 42% are women, so a gendered salutation is close to a coin flip, and the neutral form above is the safer choice.
Ready-made greetings in six languages
English
Dear Ko,
German
Guten Tag Ko,
French
Bonjour Ko,
Spanish
Estimado/a Ko:
Chinese
Ko您好：
Japanese
Ko様
English
Hi Ko,
German
Hi Ko,
French
Salut Ko,
Spanish
Hola Ko,
Chinese
Ko你好：
Japanese
Ko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 |
|---|---|---|---|
| Japan | rare | man's name | 75% |
| Korea | rare | unisex name | 50% |
| Netherlands | rare | unisex name | 50% |
Frequently asked questions
Is Ko a male or female name?
Ko is a unisex given name: about 58% of people named Ko are men and 42% are women, so a gendered salutation is a coin flip and the neutral form is the safe choice.
How do I address Ko in an email?
To address Ko when you do not know their gender, use the full name with no title: "Dear Ko," in English, "Guten Tag Ko," in German. About 58% of people named Ko are men and 42% are women, so a gendered salutation is close to a coin flip, and the neutral form above is the safer choice.
Is Ko a unisex name?
Ko is a unisex name: 58% of people named Ko are men. The split stays close across most of the countries in the data.
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 Ko a male or female name?", https://dearwho.vercel.app/name/ko (accessed 2026-09-11). Data: nam_dict (J. Michael, GFDL) and US SSA, built 2026-09-11.
BibTeX
@misc{dearwho_ko,
title = {Is Ko a male or female name?},
author = {{DearWho}},
year = {2026},
url = {https://dearwho.vercel.app/name/ko},
note = {Data: nam_dict (GFDL), US SSA public domain}
}