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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/).

Alive in 2025
137,640
Newborns 2025
610
National rank
#103
Next name day
4 March
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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.

When Kazimierz celebrates name day

Kazimierz appears 3 times in the Polish name day calendar, 1 of them as a main name, the first on 4 March.

Next name day
4 March
Thursday in 2027
Next one in 175 days
Name days

The days Polish calendars list this name on. By custom you celebrate one of them, usually the first after your birthday.

Also celebrates

Rarer dates. Only the most complete calendars add this name on these days. Most skip them, so hardly anyone celebrates then.

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.

People with the name Kazimierz 2019 → 2025
137,640 -34,243 since 2019
2020 168,954 -2,929
2021 161,639 -7,315
2022 154,376 -7,263
2023 148,424 -5,952
2024 143,008 -5,416
2025 137,640 -5,368

Kazimierz's popularity over time

610 boys were given the name in 2025, ranking #96 among newborns. It has been climbing since 2000.

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610 newborns with the name Kazimierz in 2025
national rank #96 that year

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.

More common than average Less common than average

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).

As a first name
137,640
As a middle name
165,333
first name 45% middle name 55%
Middle-name ranking men

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Search the register, or step through the ranking one place at a time.

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