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Rio

Rio is a unisex given name: about 57% of people named Rio are men and 43% are women, so a gendered salutation is a coin flip and the neutral form is the safe choice.

UnisexMedium
Male 57%Female 43%

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

Verdict
Unisex
Male / female split
57% male / 43% female
Confidence
Medium (8 to 63 weighted country observations)
Most common in
United States, Japan
US births since 1880
2,247 male / 1,437 female
Data
nam_dict (GFDL) + US SSA
Updated
2026-09-11

How to address Rio

To address Rio when you do not know their gender, use the full name with no title: "Dear Rio," in English, "Guten Tag Rio," in German. About 57% of people named Rio are men and 43% 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 Rio,

German

Guten Tag Rio,

French

Bonjour Rio,

Spanish

Estimado/a Rio:

Chinese

Rio您好：

Japanese

Rio様

English

Hi Rio,

German

Hi Rio,

French

Salut Rio,

Spanish

Hola Rio,

Chinese

Rio你好：

Japanese

Rio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 Rio by country (nam_dict, 55 country columns)
CountryHow commonUsuallyMale share
United Statesuncommonunisex name61%
Japanrarewoman's name2%

United States birth data

2,247 male · 1,437 female · 3,684 births recorded

Male 61%Female 39%

Since 1980: 60% male.

Frequently asked questions

Is Rio a male or female name?

Rio is a unisex given name: about 57% of people named Rio are men and 43% are women, so a gendered salutation is a coin flip and the neutral form is the safe choice.

How do I address Rio in an email?

To address Rio when you do not know their gender, use the full name with no title: "Dear Rio," in English, "Guten Tag Rio," in German. About 57% of people named Rio are men and 43% are women, so a gendered salutation is close to a coin flip, and the neutral form above is the safer choice.

Is Rio a unisex name?

Rio is a unisex name: 57% of people named Rio are men. The split stays close across most of the countries in the data.

Related names

MariaFemaleAnnaFemaleMarieFemalePeterMaleJeanDepends on the countryAlexanderMaleDavidMaleJoseMale

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

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