Jacek
/JH-AA-K-EH-K/
Hyacinth, in Polish form — Jacek (Polish, from Greek Hyakinthos via Latin) is the popular Polish form of the saint-name Hyacinth. It honours Jacek of Poland, a Dominican friar credited with carrying his order across Eastern Europe and venerated as the Apostle of the North in Polish, Czech and Slovak Catholicism.
Get Jacek's full report — patron saint, feast day & a portrait — freeQuick — what every Christian parent asks about Jacek:
How well does Jacek fit your family?
This page tells you what Jacek 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 Jacek's score — free
Six signals — scored for your family & heritage, not in the abstract:
Meaning & origin
Yes — Jacek is a Christian boy name of Polish origin, meaning “Hyacinth, in Polish form — Jacek (Polish, from Greek Hyakinthos via Latin) is the popular Polish form of the saint-name Hyacinth. It honours Jacek of Poland, a Dominican friar credited with carrying his order across Eastern Europe and venerated as the Apostle of the North in Polish, Czech and Slovak Catholicism.”.
Jacek is a boy's name of Polish origin, traditionally used in Christian families. The name means "Hyacinth, in Polish form — Jacek (Polish, from Greek Hyakinthos via Latin) is the popular Polish form of the saint-name Hyacinth. It honours Jacek of Poland, a Dominican friar credited with carrying his order across Eastern Europe and venerated as the Apostle of the North in Polish, Czech and Slovak Catholicism." and belongs to the Divine cluster — names rooted in sacred meaning and spiritual tradition.
Common among Polish, European families, Jacek carries cultural weight that goes beyond its dictionary definition — it's a name with a story and a community.
The patron saint & feast day behind Jacek
Many Christian names carry a patron saint and a feast day (name day) — a tradition of choosing a name for the saint a child is born near, or one the family holds dear. Jacek lives in this tradition of meaning and heritage.
NameRoot connects the dots. See Jacek's patron saint, its feast day, and whether it aligns with your baby's birth — alongside its full family score.
See Jacek's saint & feast day →What does Jacek'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 Jacek resonates in either tradition.
Jacek's destiny number is 3 — but a number only matters in context. The app matches it to your family's own numbers for a real compatibility read. See Jacek's full reading →
Does Jacek go with your family's names?
Jacek breaks into 5 sounds: /JH-AA-K-EH-K/. 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 Jacek 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 Jacek beside your family's names →
Nicknames
Common affectionate forms of Jacek — useful for everyday family conversation, early childhood, or as standalone given names themselves.
Names similar to Jacek
If Jacek 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 Christian boy names, common in Polish families
Sharing the same meaning
Other Christian boy names from the Divine cluster
Names that sound similar
Christian boy names that open with the same syllables as Jacek
Explore more names
Keep exploring names like Jacek — by tradition, by meaning, or by first letter.
Common questions about Jacek
What does the name Jacek mean?
Jacek means "Hyacinth, in Polish form — Jacek (Polish, from Greek Hyakinthos via Latin) is the popular Polish form of the saint-name Hyacinth. It honours Jacek of Poland, a Dominican friar credited with carrying his order across Eastern Europe and venerated as the Apostle of the North in Polish, Czech and Slovak Catholicism.." It is a boy name of Polish origin, traditionally used in Christian families.
Is Jacek a boy or girl name?
Jacek is most commonly used as a boy name.
What is the origin of the name Jacek?
Jacek is of Polish origin, used in Christian tradition, commonly among Polish, European families.
Is Jacek a Christian name?
Yes. Jacek is a boy name traditionally used in Christian families, of Polish origin.
What does Jacek mean in Polish?
Jacek originates from Polish, where it means "Hyacinth, in Polish form — Jacek (Polish, from Greek Hyakinthos via Latin) is the popular Polish form of the saint-name Hyacinth. It honours Jacek of Poland, a Dominican friar credited with carrying his order across Eastern Europe and venerated as the Apostle of the North in Polish, Czech and Slovak Catholicism.."
What are common nicknames for Jacek?
Common short forms of Jacek include Jacus.
What is the numerology of Jacek?
Jacek has a Pythagorean destiny number of 3 — creativity and joyful expression.
When is Jacek's feast day?
Jacek's feast day — its traditional Christian name day — is August 17.
See how Jacek 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 — Jacek is waiting.
Get NameRoot — free