Siwoo
Boy nameSiwoo has been given to 28 babies in the U.S. since 2008. It peaked in 2025. In 2025, about 1 in 244,011 boys was named Siwoo.
Popularity over time births per year, 1880–2025
Total babies
28
Peak year
2025 (7 babies)
Rank in 2025
Below top 1000
First recorded
2008
10-year trend
▲ +17%
Gender split
All boys
Names with a similar vibe
Same primary gender, peaked around the same years, and roughly as common as Siwoo.
Sibling name ideas for Siwoo
Same era and popularity as Siwoo, avoiding matching initials or rhymes.
FAQ
How popular is the name Siwoo?
Siwoo has been given to 28 babies in the U.S. since 2008. It ranked below the top 1000 in 2025.
When did the name Siwoo peak?
Siwoo peaked in 2025, when 7 babies were given the name.
Is Siwoo a girl or boy name?
Siwoo is primarily a boy name (100% of babies named Siwoo are boys).
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