Reiko

Reiko is a female given name: 95% of people named Reiko are women, and it is recorded as female in 2 of the 3 countries covered.

FemaleHigh

Male 5%Female 95%

Verdict: Female
Male / female split: 5% male / 95% female
Confidence: High (64 or more weighted country observations)
Most common in: Japan, United States, East Frisia
US births since 1880: 12 male / 629 female
Data: nam_dict (GFDL) + US SSA
Updated: 2026-09-11

How to address Reiko

When you do not know their gender for certain, the full name with no title is the safe choice: "Dear Reiko," in English, "Guten Tag Reiko," in German. Reiko is a female given name: about 95% of people named Reiko are women. A quick look at a profile confirms it for certain.

Ready-made greetings in six languages

English

Dear Reiko,

German

Guten Tag Reiko,

French

Bonjour Reiko,

Spanish

Estimado/a Reiko:

Chinese

Reiko您好：

Japanese

Reiko様

English

Hi Reiko,

German

Hi Reiko,

French

Salut Reiko,

Spanish

Hola Reiko,

Chinese

Reiko你好：

Japanese

Reiko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

Gender of the name Reiko by country (nam_dict, 55 country columns)
Country	How common	Usually	Male share
Japan	common	woman's name	2%
United States	uncommon	woman's name	2%
East Frisia	rare	man's name	98%

United States birth data

12 male · 629 female · 641 births recorded

Male 2%Female 98%

Since 1980: 2% male.

Frequently asked questions

Is Reiko a male or female name?

Reiko is a female given name: 95% of people named Reiko are women, and it is recorded as female in 2 of the 3 countries covered.

How do I address Reiko in an email?

Is Reiko a unisex name?

Reiko is not a unisex name: 5% of people named Reiko are men. Reiko leans strongly female overall.

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.

Cite this page

DearWho, "Is Reiko a male or female name?", https://dearwho.vercel.app/name/reiko (accessed 2026-09-11). Data: nam_dict (J. Michael, GFDL) and US SSA, built 2026-09-11.

BibTeX

@misc{dearwho_reiko,
  title  = {Is Reiko a male or female name?},
  author = {{DearWho}},
  year   = {2026},
  url    = {https://dearwho.vercel.app/name/reiko},
  note   = {Data: nam_dict (GFDL), US SSA public domain}
}