Kazimierz
A Slavic name making a strong comeback: given to hundreds of boys a year now, after a long stretch when it barely registered. It means "proclaimer of peace", and today you almost certainly know a Kazimierz.
Kazimierz Pronunciation
Kazimierz is pronounced kah-ZHEEM-yesh (/kaˈʑimjɛʂ/).
What Kazimierz means
Where Kazimierz comes from and what it has meant to the people who carry it.
Kazimierz grows from old Slavic roots. The clear part is the ending, mir, an element meaning peace that shows up across many Slavic names. The site reads the whole name as "proclaimer of peace," and that sense of peace-bearing has stayed attached to it for centuries, even as scholars still argue over the first part.
Poland gave the name real weight. Kazimierz III, the fourteenth-century king remembered as the Great, is the bearer most Poles reach for first. There is also Saint Kazimierz, patron of Poland and Lithuania, whose name-day falls on 4 March. On that date the imieniny still gets marked.
The name bends easily. Kazik is the everyday short form, the one a friend uses. Kazimiera turns it toward a daughter. A school register might seat a Kazimierz two rows from a Kazik.
How many people are named Kazimierz
1 in 155 men in Poland is named Kazimierz. 137,640 people carry it in the 2025 register: rank #103 among male names.
Kazimierz's popularity over time
610 boys were given the name in 2025, ranking #96 among newborns. It has been climbing since 2000.
Where Kazimierz is most popular
Kazimierz is most popular in Masovian, 60% above the national average (1,094 boys born 2019–2025), followed by Pomeranian (+30%) and Greater Poland (+24%). It is least common in Subcarpathian and Opole, 55% and 48% below average respectively.
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Masovian1,094 boys born+60%
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Pomeranian371 boys born+30%
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Greater Poland516 boys born+24%
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West Pomeranian181 boys born+11%
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Łódź250 boys born+2%
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Lower Silesian308 boys born+1%
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Lublin178 boys born−10%
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Kuyavian-Pomeranian182 boys born−14%
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Silesian350 boys born−20%
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Warmian-Masurian110 boys born−21%
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Lubusz72 boys born−25%
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Podlaskie95 boys born−25%
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Świętokrzyskie69 boys born−36%
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Lesser Poland248 boys born−43%
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Opole46 boys born−48%
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Subcarpathian105 boys born−55%
Kazimierz as a middle name
Kazimierz is a first name for 137,640 men in Poland and a middle name for another 165,333, a 45/55 split — almost evenly. In the men's middle-name ranking it sits 17th, between Łukasz (174,086) and Tadeusz (165,202).
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15
189,825Wojciech
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16
174,086Łukasz
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17165,333Kazimierz
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18
165,202Tadeusz
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19
150,754Antoni
When Kazimierz celebrates name day
Kazimierz appears 1 time in the Polish name day calendar. The main date is 4 March.