2,243births recorded
6Countries
3Variants
2017Peak · Belgium
#361Belgium 2025
Seb is a boy name family recorded 2,243 times in 6 countries since 1947. It ranks highest today in Belgium (#361 in 2025). Its all-time peak was in Belgium in 2017, at 131.2 births per 100,000. Elsewhere it is mostly given as Sep (Belgium), Sepp (Argentina, United States).
Popularity by country
Births per 100,000 newborns, all forms of the name combined.
Which form wins where
Births per 100,000 newborns for each form, in the selected country.
All forms of Seb
| Variants | Language | Total births | Country | Latest rank | Peak year | 10-year trend |
|---|---|---|---|---|---|---|
| Seb | French | 653 | 🏴 England & Wales | #1124 | 2018 | ▼ 20 % |
| Seb | French | 291 | 🇧🇪 Belgium | #848 | 2015 | ▼ 47 % |
| Seb | French | 5 | 🇫🇷 France | – | 2013 | – |
| Seb | French | 5 | 🏴 Scotland | – | 2018 | – |
| Sep | French | 679 | 🇧🇪 Belgium | #361 | 2017 | ▼ 24 % |
| Sepp | French | 600 | 🇧🇪 Belgium | #566 | 2020 | ▼ 57 % |
| Sepp | French | 5 | 🇦🇷 Argentina | – | 1947 | – |
| Sepp | French | 5 | 🇺🇸 United States | – | 2012 | – |
How we grouped these names
- Seb ↔ Sep — Wikidata “said to be the same as”
- Sep ↔ Sepp — spelling variant
Questions about Seb
How popular is the name Seb?
In 2025 it ranked #361 in Belgium. Official registers record 2,243 births across 6 countries.
What is Seb in other languages?
Sep (French); Sepp (French).
When was Seb most popular?
It peaked in Belgium in 2017, at 131.2 births per 100,000.
Is Seb a boy or a girl name?
In official birth registers, Seb is a boy name.