The baby name Kasja is a Female name , 2 syllables long and is pronounced KAH-syah (ˈkɑs.jɑ),KAH-sha (ˈkaɕa) — similar pronunciation for Polish form "Kasia".
The baby name Kasja is a Female name , 2 syllables long and is pronounced KAH-syah (ˈkɑs.jɑ),KAH-sha (ˈkaɕa) — similar pronunciation for Polish form "Kasia".
Kasja is Polish, Slavic in Origin.
Kasja is a contemporary cross-cultural diminutive of Katherine, blending the Polish Kasia and the Swedish Kajsa. Like its relatives, it ultimately traces to Greek Aikaterine, traditionally linked to katharos, meaning pure, though scholars also note possible connections to Hecate or an older pre-Greek root. The saintly renown of Catherine of Alexandria and Catherine of Siena helped seed the name and its many pet forms across Europe.
Used independently since the late 20th century, Kasja appears in Scandinavian records and among Polish and Baltic diasporas as a distinctive yet familiar twist on Katarina/Katarzyna. Close variants include Kajsa (Swedish), Kaisa (Finnish/Estonian), Kasia (Polish), Kaja (Nordic/Slavic), Katja and Katia (Slavic/German), as well as the English Katherine/Catherine family. Nicknames can be Kas or Kaja. The name carries a bright, upbeat sound while keeping the classic meaning of purity, making it a culturally versatile choice that feels both modern and rooted.
Kasja is far from common. We have only 29 recorded uses of it on record, from 6 countries.
Based on birth registration data from national statistics agencies.
| Country | Gender | Year | Rank | Born | of |
|---|---|---|---|---|---|
| HR | Girls | 0 | #294 | 1 | 3,687 |
| PL | Girls | 0 | #356 | 9 | 5,096 |
| RU | Girls | 0 | #522 | 2 | 11,913 |
| PS | Girls | 0 | #547 | 1 | 10,981 |
| IL | Girls | 0 | #645 | 1 | 11,648 |
| NL | Girls | 0 | #941 | 15 | 5,933 |
Kasja is popular in 6 countries — most recent births per country:
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