Rostyslav
Rostyslav 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
- Ukraine
- Data
- nam_dict (GFDL) + US SSA
- Dataset built
- 2026-09-11
How to address Rostyslav
If you do not know Rostyslav’s preferred form of address, use a greeting without Mr or Ms: “Dear Rostyslav,” in English, “Guten Tag Rostyslav,” 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 Rostyslav,
German
Guten Tag Rostyslav,
French
Bonjour Rostyslav,
Spanish
Estimado/a Rostyslav:
Chinese
Rostyslav您好:
Japanese
Rostyslav様
English
Hi Rostyslav,
German
Hi Rostyslav,
French
Salut Rostyslav,
Spanish
Hola Rostyslav,
Chinese
Rostyslav你好:
Japanese
Rostyslav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 |
|---|---|---|
| Ukraine | rare | man's name |
Frequently asked questions
Is Rostyslav a male or female name?
Rostyslav 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 Rostyslav in an email?
If you do not know Rostyslav’s preferred form of address, use a greeting without Mr or Ms: “Dear Rostyslav,” in English, “Guten Tag Rostyslav,” 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 Rostyslav a unisex name?
Rostyslav 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 Rostyslav a male or female name?", https://www.dearwho.app/name/rostyslav. Data: nam_dict (J. Michael, GFDL) and US SSA, built 2026-09-11.
BibTeX
@misc{dearwho_rostyslav,
title = {Is Rostyslav a male or female name?},
author = {{DearWho}},
year = {2026},
url = {https://www.dearwho.app/name/rostyslav},
note = {Data: nam_dict (GFDL), US SSA public domain}
}