Siwoo
/SH-IY-W-UW/
A Korean name typically written with hanja pairing si (begin, start — 始) and woo (universe, space — 宇), expressing the wish that a son's beginning be as wide and boundless as the cosmos itself. Alternative hanja combinations are used but the aspiration toward a cosmically vast life is the consistent intent.
See Siwoo scored for your familyQuick — what every Buddhist parent asks about Siwoo:
Yes — Siwoo is a Buddhist boy name of Korean origin, meaning “A Korean name typically written with hanja pairing si (begin, start — 始) and woo (universe, space — 宇), expressing the wish that a son's beginning be as wide and boundless as the cosmos itself. Alternative hanja combinations are used but the aspiration toward a cosmically vast life is the consistent intent.”. It also appears in Christian tradition.
How well does Siwoo fit your family?
This page tells you what Siwoo means. The app tells you whether it's right for your baby — scored against your family & your heritage, and your baby's birth details.
Unlock Siwoo's score — free
Six signals — scored for your family & heritage, not in the abstract:
Meaning & origin
Siwoo is a boy's name of Korean origin, traditionally used in Buddhist families. The name means "A Korean name typically written with hanja pairing si (begin, start — 始) and woo (universe, space — 宇), expressing the wish that a son's beginning be as wide and boundless as the cosmos itself. Alternative hanja combinations are used but the aspiration toward a cosmically vast life is the consistent intent." and belongs to the Nobility cluster — names with regal heritage and dignified bearing.
Beyond its Buddhist heritage, Siwoo is also used in Christian traditions, reflecting how this name has traveled across cultures.
Common among Korean families, Siwoo carries cultural weight that goes beyond its dictionary definition — it's a name with a story and a community.
Siwoo in the Buddhist tradition
Buddhist names often carry a virtue to aspire to — peace, wisdom, compassion. Siwoo means “A Korean name typically written with hanja pairing si (begin, start — 始) and woo (universe, space — 宇), expressing the wish that a son's beginning be as wide and boundless as the cosmos itself. Alternative hanja combinations are used but the aspiration toward a cosmically vast life is the consistent intent.”, with Korean roots.
NameRoot shows the meaning. See the full meaning and heritage of Siwoo, and how it scores for your family.
See Siwoo's full reading →What does Siwoo's numerology say?
Numerology assigns each name a single-digit destiny number by summing its letter values. Different schools use different mappings — NameRoot computes both so you can see how Siwoo resonates in either tradition.
Siwoo's destiny number is 9 — but a number only matters in context. The app matches it to your family's own numbers for a real compatibility read. See Siwoo's full reading →
Does Siwoo go with your family's names?
Siwoo breaks into 4 sounds: /SH-IY-W-UW/. The real test isn't how it sounds alone — it's how it sounds beside the names already in your family: yours, your partner's, and any brothers or sisters. NameRoot scores that harmony, so Siwoo sits naturally next to a Mum and Dad like Michael & Anna, or a big sister named Gianna — no awkward clashes, no two names that blur together. Hear Siwoo beside your family's names →
Names similar to Siwoo
If Siwoo resonates with you, these names live in the same world — drawn from the same tradition, sharing the same meaning, or echoing a similar sound.
From the same tradition
Other Buddhist boy names, common in Korean families
Sharing the same meaning
Other Buddhist boy names from the Nobility cluster
Names that sound similar
Buddhist boy names that open with the same syllables as Siwoo
Explore more names
Keep exploring names like Siwoo — by tradition, by meaning, or by first letter.
Common questions about Siwoo
What does the name Siwoo mean?
Siwoo means "A Korean name typically written with hanja pairing si (begin, start — 始) and woo (universe, space — 宇), expressing the wish that a son's beginning be as wide and boundless as the cosmos itself. Alternative hanja combinations are used but the aspiration toward a cosmically vast life is the consistent intent.." It is a boy name of Korean origin, traditionally used in Buddhist families.
Is Siwoo a boy or girl name?
Siwoo is most commonly used as a boy name.
What is the origin of the name Siwoo?
Siwoo is of Korean origin, used in Buddhist, Christian traditions, commonly among Korean families.
Is Siwoo a Buddhist name?
Yes. Siwoo is a boy name traditionally used in Buddhist families, of Korean origin. It also appears in Christian tradition.
What does Siwoo mean in Korean?
Siwoo originates from Korean, where it means "A Korean name typically written with hanja pairing si (begin, start — 始) and woo (universe, space — 宇), expressing the wish that a son's beginning be as wide and boundless as the cosmos itself. Alternative hanja combinations are used but the aspiration toward a cosmically vast life is the consistent intent.."
What is the numerology of Siwoo?
Siwoo has a Pythagorean destiny number of 9 — compassion and humanitarian service.
See how Siwoo scores for your family
NameRoot is the only baby-name app that scores every name across 6 signals against your specific family context. Download free — Siwoo is waiting.
Get NameRoot — free