Cai
Cai is a unisex given name: about 67% of people named Cai are men and 33% are women, so a gendered salutation is a coin flip and the neutral form is the safe choice.
- Verdict
- Mostly male
- Male / female split
- 67% male / 33% female
- Confidence
- Medium (8 to 63 weighted country observations)
- Most common in
- China, United States, Germany
- US births since 1880
- 818 male / 304 female
- Data
- nam_dict (GFDL) + US SSA
- Updated
- 2026-09-11
How to address Cai
To address Cai when you do not know their gender, use the full name with no title: "Dear Cai," in English, "Guten Tag Cai," in German. About 67% of people named Cai are men and 33% 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 Cai,
German
Guten Tag Cai,
French
Bonjour Cai,
Spanish
Estimado/a Cai:
Chinese
Cai您好：
Japanese
Cai様
English
Hi Cai,
German
Hi Cai,
French
Salut Cai,
Spanish
Hola Cai,
Chinese
Cai你好：
Japanese
Cai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 |
|---|---|---|---|
| China | uncommon | unisex name | 50% |
| United States | uncommon | man's name | 73% |
| Germany | rare | man's name | 75% |
| Denmark | rare | man's name | 98% |
| East Frisia | rare | man's name | 75% |
| Great Britain | rare | man's name | 98% |
United States birth data
818 male · 304 female · 1,122 births recorded
Since 1980: 73% male.
Frequently asked questions
Is Cai a male or female name?
Cai is a unisex given name: about 67% of people named Cai are men and 33% are women, so a gendered salutation is a coin flip and the neutral form is the safe choice.
How do I address Cai in an email?
To address Cai when you do not know their gender, use the full name with no title: "Dear Cai," in English, "Guten Tag Cai," in German. About 67% of people named Cai are men and 33% are women, so a gendered salutation is close to a coin flip, and the neutral form above is the safer choice.
Is Cai a unisex name?
Cai is not a unisex name: 67% of people named Cai are men. Cai 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 Cai a male or female name?", https://dearwho.vercel.app/name/cai (accessed 2026-09-11). Data: nam_dict (J. Michael, GFDL) and US SSA, built 2026-09-11.
BibTeX
@misc{dearwho_cai,
title = {Is Cai a male or female name?},
author = {{DearWho}},
year = {2026},
url = {https://dearwho.vercel.app/name/cai},
note = {Data: nam_dict (GFDL), US SSA public domain}
}