Hiroo
Hiroo is a male given name: 98% of people named Hiroo are men, and it is recorded as male in 1 of the 1 countries covered.
We have limited data on this name. Treat the verdict as a lead, not a certainty.
- Verdict
- Male
- Male / female split
- 98% male / 2% female
- Confidence
- Low (fewer than 8 weighted country observations)
- Most common in
- Japan
- Data
- nam_dict (GFDL) + US SSA
- Updated
- 2026-09-11
How to address Hiroo
When you do not know their gender for certain, the full name with no title is the safe choice: "Dear Hiroo," in English, "Guten Tag Hiroo," in German. Hiroo is a male given name: about 98% of people named Hiroo are men. A quick look at a profile confirms it for certain.
Ready-made greetings in six languages
English
Dear Hiroo,
German
Guten Tag Hiroo,
French
Bonjour Hiroo,
Spanish
Estimado/a Hiroo:
Chinese
Hiroo您好：
Japanese
Hiroo様
English
Hi Hiroo,
German
Hi Hiroo,
French
Salut Hiroo,
Spanish
Hola Hiroo,
Chinese
Hiroo你好：
Japanese
Hiroo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 |
|---|---|---|---|
| Japan | rare | man's name | 98% |
Frequently asked questions
Is Hiroo a male or female name?
Hiroo is a male given name: 98% of people named Hiroo are men, and it is recorded as male in 1 of the 1 countries covered.
How do I address Hiroo in an email?
When you do not know their gender for certain, the full name with no title is the safe choice: "Dear Hiroo," in English, "Guten Tag Hiroo," in German. Hiroo is a male given name: about 98% of people named Hiroo are men. A quick look at a profile confirms it for certain.
Is Hiroo a unisex name?
Hiroo is not a unisex name: 98% of people named Hiroo are men. Hiroo 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 Hiroo a male or female name?", https://dearwho.vercel.app/name/hiroo (accessed 2026-09-11). Data: nam_dict (J. Michael, GFDL) and US SSA, built 2026-09-11.
BibTeX
@misc{dearwho_hiroo,
title = {Is Hiroo a male or female name?},
author = {{DearWho}},
year = {2026},
url = {https://dearwho.vercel.app/name/hiroo},
note = {Data: nam_dict (GFDL), US SSA public domain}
}