Rui
Rui is a unisex given name: about 82% of people named Rui are men and 18% are women, so a gendered salutation is a coin flip and the neutral form is the safe choice.
- Verdict
- Mostly male
- Male / female split
- 82% male / 18% female
- Confidence
- High (64 or more weighted country observations)
- Most common in
- Portugal, China, United States
- US births since 1880
- 584 male / 20 female
- Data
- nam_dict (GFDL) + US SSA
- Updated
- 2026-09-11
How to address Rui
To address Rui when you do not know their gender, use the full name with no title: "Dear Rui," in English, "Guten Tag Rui," in German. About 82% of people named Rui are men and 18% 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 Rui,
German
Guten Tag Rui,
French
Bonjour Rui,
Spanish
Estimado/a Rui:
Chinese
Rui您好：
Japanese
Rui様
English
Hi Rui,
German
Hi Rui,
French
Salut Rui,
Spanish
Hola Rui,
Chinese
Rui你好：
Japanese
Rui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 |
|---|---|---|---|
| Portugal | common | man's name | 98% |
| China | common | unisex name | 50% |
| United States | uncommon | man's name | 97% |
| Japan | rare | woman's name | 25% |
United States birth data
584 male · 20 female · 604 births recorded
Since 1980: 96% male.
Frequently asked questions
Is Rui a male or female name?
Rui is a unisex given name: about 82% of people named Rui are men and 18% are women, so a gendered salutation is a coin flip and the neutral form is the safe choice.
How do I address Rui in an email?
To address Rui when you do not know their gender, use the full name with no title: "Dear Rui," in English, "Guten Tag Rui," in German. About 82% of people named Rui are men and 18% are women, so a gendered salutation is close to a coin flip, and the neutral form above is the safer choice.
Is Rui a unisex name?
Rui is not a unisex name: 82% of people named Rui are men. Rui 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 Rui a male or female name?", https://dearwho.vercel.app/name/rui (accessed 2026-09-11). Data: nam_dict (J. Michael, GFDL) and US SSA, built 2026-09-11.
BibTeX
@misc{dearwho_rui,
title = {Is Rui a male or female name?},
author = {{DearWho}},
year = {2026},
url = {https://dearwho.vercel.app/name/rui},
note = {Data: nam_dict (GFDL), US SSA public domain}
}