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© 2026 Namesake · namesake.baby

Data: Social Security Administration, US births 1880–2024

Sejun — Meaning, Origin & Popularity | Namesake
All names
Sejal|Sekai
KoreanBoy→ Stable

Sejun

seh-JOON · 2 syllables

Share Sejun:
Compare with another name
Boy

Outside top 1000

Last ranked #11896 in 2021

Peak: #11896 in 2021

→ Stable

Outside top 1000

Last ranked #11896 in 2021

Peak: #11896 in 2021

5yr change
—
Birth frequency
1.7 per 1,000,000 births
Sex split
100% boy · 0% girl

This name has very limited recent SSA data.

This name is given to very few babies each year — it sits outside the range shown in these charts.

Namesake Score
42
Higher than 42% of names
Combines uniqueness, trend, meaning, feasibility, and search interest.
Trend
→ Stable
Based on SSA rank velocity
Feasibility
Limited
.com taken · — · clear
Low friction, available
Uniqueness
45
Won't be common in class

Sejun scores lower overall — it's a well-known name in this region.

Meaning Depth37% of score
60
Name Trend28% of score
55
Uniqueness20% of score
45
Feasibility15% of score
50

Scores are percentile-ranked across 43,000+ names.

Name DNA
KoreanModernBoy2-syllableSino-Korean HanjaContemporaryInternational AppealAspirational
Character
steadfast determinationquiet wisdomhumble strengthbalanced composure
People with this name

Qualities shared by notable Sejuns

strategicsocialcompetitiveadaptableanalytical
STRONG
High confidence

Sejun is a Korean boy name with steady SSA rankings. Full rank detail will appear once SSA data is linked.

Trend:→ Stable
Feasibility:.com taken · — · clear
Popularity:—
Sejun at a Glance
Meaning:Commonly composed of hanja characters meaning 'world' (世) and 'jun' (俊) for excellence, or variations with 'se' (세) meaning 'generation' combined with 'jun' for talent or purity.
Language root:Korean · Sino-Korean
Peak rank:#11896 in 2021
5yr change:—
Sex usage:100% boy · 0% girl
Notable bearers
Sejun Yu
Academic Researcher
Similar Sound
JiunJayunSeungJoon◈YunSehan
Similar Style
EunJun◈TaeMinHyunJae◈
Works well with
Min-junJi-wonHae-ilSo-jinKyu-hoJi-hoSeo-yunTae-oh
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Source: Social Security Administration baby names data. Popularity data reflects US births. Feasibility data updated monthly.
Name Intelligence
Sejun · Overview
Summary

Sejun is a Korean boy name with steady SSA rankings. Full rank detail will appear once SSA data is linked.

Strengths
Modern · Meaningful character
Sejun carries a bold, grounded quality that makes it distinctive without being invented.
Considerations
Domain taken
sejun.com is not available. Alternative TLDs may work.
Explore

Add to watchlists or your list with + Save next to the name above.

Data source:Social Security Administration
Coverage:US births 1879–2024
Updated:January 2025
ISR:Refreshes monthly
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