Seiichiro
Seiichiro is classified as a male given name in our dataset. A first name alone does not establish someone’s gender or preferred form of address.
Confidence describes the weight of the source data, not a measured accuracy rate.
We have limited data on this name. Treat the verdict as a lead, not a certainty.
- Verdict
- Male
- Confidence
- Low (source weight below 8; not an accuracy rate)
- High source frequency in
- Japan
- Data
- nam_dict (GFDL) + US SSA
- Dataset built
- 2026-09-11
How to address Seiichiro
If you do not know Seiichiro’s preferred form of address, use a greeting without Mr or Ms: “Dear Seiichiro,” in English, “Guten Tag Seiichiro,” in German. Include their family name if you know it. The name’s classification describes its usage. Follow the form of address the person uses for themselves.
Ready-made greetings in six languages
English
Dear Seiichiro,
German
Guten Tag Seiichiro,
French
Bonjour Seiichiro,
Spanish
Estimado/a Seiichiro:
Chinese
Seiichiro您好：
Japanese
Seiichiro様
English
Hi Seiichiro,
German
Hi Seiichiro,
French
Salut Seiichiro,
Spanish
Hola Seiichiro,
Chinese
Seiichiro你好：
Japanese
Seiichiro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 |
|---|---|---|
| Japan | rare | man's name |
Frequently asked questions
Is Seiichiro a male or female name?
Seiichiro is classified as a male given name in our dataset. A first name alone does not establish someone’s gender or preferred form of address.
How do I address Seiichiro in an email?
If you do not know Seiichiro’s preferred form of address, use a greeting without Mr or Ms: “Dear Seiichiro,” in English, “Guten Tag Seiichiro,” in German. Include their family name if you know it. The name’s classification describes its usage. Follow the form of address the person uses for themselves.
Is Seiichiro a unisex name?
Seiichiro is classified as generally male in the combined dataset. This does not rule out other uses. Our categories describe the sources, rather than a complete survey of everyone with this name.
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 (1880–2017), public domain. Classifications are not measured accuracy rates. Method: how we classify names. Full dataset: data & licences. US source data (babynames). Dataset built 2026-09-11; this is not a new collection date for the source records.
DearWho, "Is Seiichiro a male or female name?", https://www.dearwho.app/name/seiichiro. Data: nam_dict (J. Michael, GFDL) and US SSA, built 2026-09-11.
BibTeX
@misc{dearwho_seiichiro,
title = {Is Seiichiro a male or female name?},
author = {{DearWho}},
year = {2026},
url = {https://www.dearwho.app/name/seiichiro},
note = {Data: nam_dict (GFDL), US SSA public domain}
}