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DearWho

Ko

Ko is classified as a unisex given name in our dataset. A first name alone does not establish someone’s gender or preferred form of address.

UnisexMedium

Confidence describes the weight of the source data, not a measured accuracy rate.

This name is used for both men and women without a strong lean either way.

Verdict
Unisex
Confidence
Medium (source weight 8 to 63; not an accuracy rate)
High source frequency in
Japan, Korea, Netherlands
Data
nam_dict (GFDL) + US SSA
Dataset built
2026-09-11

How to address Ko

If you do not know Ko’s preferred form of address, use a greeting without Mr or Ms: “Dear Ko,” in English, “Guten Tag Ko,” in German. Include their family name if you know it. The name’s classification describes its usage. Follow the form of address the person uses for themselves.

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

Greeting generator

This is a statistical estimate, not a statement about the gender, identity or correct form of address of any particular person.

Country breakdown

Classification of Ko by country (nam_dict and US SSA; not a survey of today’s population)
CountryHow commonUsually
Japanrareman's name
Korearareunisex name
Netherlandsrareunisex name

Frequently asked questions

Is Ko a male or female name?

Ko is classified as a unisex given name in our dataset. A first name alone does not establish someone’s gender or preferred form of address.

How do I address Ko in an email?

If you do not know Ko’s preferred form of address, use a greeting without Mr or Ms: “Dear Ko,” in English, “Guten Tag Ko,” in German. Include their family name if you know it. The name’s classification describes its usage. Follow the form of address the person uses for themselves.

Is Ko a unisex name?

Ko is classified as a unisex name in our dataset. This does not establish a 50:50 population split. The country table shows the individual source classifications.

Related names

MariFemaleHiroshiMaleKeikoFemaleAkiraUnisexMikaDepends on the countryKenjiMaleMikiDepends on the countryMarikoFemale

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 (1880–2017), public domain. Classifications are not measured accuracy rates. Method: how we classify names. Full dataset: data & licences. US source data (babynames). Dataset built 2026-09-11; this is not a new collection date for the source records.

Cite this page

DearWho, "Is Ko a male or female name?", https://www.dearwho.app/name/ko. 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://www.dearwho.app/name/ko},
  note   = {Data: nam_dict (GFDL), US SSA public domain}
}