Boy name · Korean
Si-woo
“beginning + protection”
Vibes
Explore Si-woo further
Similar-feel alternatives, or middle-name candidates that pair well with Si-woo — both ranked by the same scoring system (vibe overlap, syllable rhythm, origin compatibility).
About the name
Si-woo is Korean — commonly 시우, pairing hanja for "beginning" (si) with "protection, rain" (woo): "the beginning, sheltered" — a top-ten Korean boy name of the recent decade.
Rare in the West, Si-woo carries the two-blessing structure with an origin-story meaning: the start, kept safe.
Two quick syllables (shee-OO). It pairs well with simple middles (Si-woo James, Si-woo Alexander). On our vibe map it is Cultural Fusion with Modern Minimalist envelope — the beginning, weatherproofed.
More Korean names
Si-woo sits in our Korean set — these share its roots.
All Korean names →Si-woo — common questions
Is Si-woo a boy or girl name?
Si-woo is traditionally a boy name of Korean origin.
What does the name Si-woo mean?
Si-woo means “beginning + protection” of Korean origin. Si-woo is Korean — commonly 시우, pairing hanja for "beginning" (si) with "protection, rain" (woo): "the beginning, sheltered" — a top-ten Korean boy name of the recent decade.
Where does the name Si-woo come from?
Si-woo is Korean in origin. Rare in the West, Si-woo carries the two-blessing structure with an origin-story meaning: the start, kept safe.
How popular is Si-woo?
Si-woo did not make the top 1,000 boys' names in US Social Security Administration data for 2025, which makes it genuinely rare in the US.
Bring the name into the room
A couple of nice things named Si-woo you might want for the nursery.