Katja
A Russian short form of Yekaterina that went its own way in Germany and Scandinavia, used there as a full name rather than a nickname. In Poland it stays rare: most people here have never met one, and the closer relatives are Katarzyna and Kasia.
Katja Pronunciation
Katja is pronounced KAHT-yah (/ˈkatja/).
What Katja means
Where Katja comes from and what it has meant to the people who carry it.
Katja began as a short form. In Russian and other Slavic tongues, Yekaterina shrank to Katja for daily use, and the small form traveled west. Germans and Scandinavians took it up as a name in its own right, and it stayed common in both.
The longer relative in Polish is Katarzyna, with Kasia as the everyday diminutive. Katja sits beside them as a compact cousin, the same root wearing two coats. The meaning most people attach to the family is "pure", czysta in Polish. That sense arrived later, borrowed from the Greek katharos, and readers linked it to the word by sound more than by descent.
Say it once and it is done. Two syllables and a hard k.
On a Polish class register, Katja can stand a line away from a Kasia. The name keeps its Slavic backbone under a German and Scandinavian surface, and it still answers to czysta, pure.
How many people are named Katja
1 in 133395 women in Poland is named Katja. 169 people carry it in the 2025 register: rank #2465 among female names.
Katja's popularity over time
Fewer than 2 girls were given the name in 2025. It has been stable for a decade.
Katja as a middle name
Katja is a first name for 169 women in Poland and a middle name for another 24, an 88/12 split. In the women's middle-name ranking it sits 1460th, between Katalin (24) and Kudzai (24).
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#1458 Karmela24
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#1459 Katalin24
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#1460 Katja24
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#1461 Kudzai24
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#1462 Lindsay24