Diederik
Diederik is a male given name: 98% of people named Diederik are men, and it is recorded as male in 2 of the 2 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
- Belgium, Netherlands
- Data
- nam_dict (GFDL) + US SSA
- Updated
- 2026-09-11
How to address Diederik
When you do not know their gender for certain, the full name with no title is the safe choice: "Dear Diederik," in English, "Guten Tag Diederik," in German. Diederik is a male given name: about 98% of people named Diederik are men. A quick look at a profile confirms it for certain.
Ready-made greetings in six languages
English
Dear Diederik,
German
Guten Tag Diederik,
French
Bonjour Diederik,
Spanish
Estimado/a Diederik:
Chinese
Diederik您好：
Japanese
Diederik様
English
Hi Diederik,
German
Hi Diederik,
French
Salut Diederik,
Spanish
Hola Diederik,
Chinese
Diederik你好：
Japanese
Diederik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 |
|---|---|---|---|
| Belgium | rare | man's name | 98% |
| Netherlands | rare | man's name | 98% |
Frequently asked questions
Is Diederik a male or female name?
Diederik is a male given name: 98% of people named Diederik are men, and it is recorded as male in 2 of the 2 countries covered.
How do I address Diederik in an email?
When you do not know their gender for certain, the full name with no title is the safe choice: "Dear Diederik," in English, "Guten Tag Diederik," in German. Diederik is a male given name: about 98% of people named Diederik are men. A quick look at a profile confirms it for certain.
Is Diederik a unisex name?
Diederik is not a unisex name: 98% of people named Diederik are men. Diederik 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 Diederik a male or female name?", https://dearwho.vercel.app/name/diederik (accessed 2026-09-11). Data: nam_dict (J. Michael, GFDL) and US SSA, built 2026-09-11.
BibTeX
@misc{dearwho_diederik,
title = {Is Diederik a male or female name?},
author = {{DearWho}},
year = {2026},
url = {https://dearwho.vercel.app/name/diederik},
note = {Data: nam_dict (GFDL), US SSA public domain}
}