Sein
Boy nameSein has been given to 6 babies in the U.S. since 2003. It peaked in 2003.
Popularity over time births per year, 1880–2025
Total babies
6
Peak year
2003 (6 babies)
Rank in 2025
Below top 1000
First recorded
2003
10-year trend
New / returning
Gender split
All boys
Spellings & variants
Names one letter away from Sein — alternate spellings parents actually use.
Names with a similar vibe
Same primary gender, peaked around the same years, and roughly as common as Sein.
Sibling name ideas for Sein
Same era and popularity as Sein, avoiding matching initials or rhymes.
FAQ
How popular is the name Sein?
Sein has been given to 6 babies in the U.S. since 2003. It ranked below the top 1000 in 2025.
When did the name Sein peak?
Sein peaked in 2003, when 6 babies were given the name.
Is Sein a girl or boy name?
Sein is primarily a boy name (100% of babies named Sein are boys).
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