Tomasz
Around half a million Polish men carry it, but it's fading fast: 495 boys got it last year, down from thousands a generation ago. From Hebrew, by way of Thomas, meaning "twin".
Tomasz Pronunciation
Tomasz is pronounced TO-mahsh (/ˈtɔmaʂ/).
What Tomasz means
Where Tomasz comes from and what it has meant to the people who carry it.
Tomasz reaches back to a Hebrew word for twin, and that plain meaning has stayed close to the name for a long time. The apostle called Thomas carried it first into wide use, the one who wanted to see the wounds before he believed. From him the sense of doubt attached to the name later, though the older meaning underneath is simply "twin," bliźniak in Polish.
Poland kept the Latinized spelling, Tomasz, while the shorter variant Tomas travels more easily across borders.
Saint Thomas the Apostle gives the name its December imieniny, the 21st, near the darkest days of the year. Thomas Aquinas gave it a second association, the medieval thinker whose books students still read.
A boy named Tomasz learns his answer early. Called in a school register, he says obecny before he has thought about apostles or philosophers. The name means twin.
How many people are named Tomasz
1 in 40 men in Poland is named Tomasz. 535,131 people carry it in the 2025 register: rank #8 among male names.
Tomasz's popularity over time
495 boys were given the name in 2025, ranking #108 among newborns. It has been falling steadily since 2000. Still the #8 name among living men, even as it slips to #108 among newborns.
Where Tomasz is most popular
Tomasz is most popular in Opole, 33% above the national average (215 boys born 2019–2025), followed by Silesian (+31%) and Lesser Poland (+21%). It is least common in Łódź and Świętokrzyskie, 33% and 30% below average respectively.
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Opole215 boys born+33%
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Silesian1,043 boys born+31%
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Lesser Poland964 boys born+21%
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Podlaskie268 boys born+16%
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Lower Silesian614 boys born+11%
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Pomeranian555 boys born+7%
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Masovian1,273 boys born+2%
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Warmian-Masurian235 boys born−7%
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West Pomeranian256 boys born−14%
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Lublin305 boys born−15%
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Lubusz149 boys born−15%
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Greater Poland633 boys born−16%
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Kuyavian-Pomeranian319 boys born−17%
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Subcarpathian326 boys born−23%
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Świętokrzyskie136 boys born−30%
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Łódź298 boys born−33%
Tomasz as a middle name
Tomasz is a first name for 535,131 men in Poland and a middle name for another 253,972, a 68/32 split. In the men's middle-name ranking it sits 9th, between Adam (279,662) and Marek (248,808).
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7
330,379Krzysztof
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8
279,662Adam
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9253,972Tomasz
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10
248,808Marek
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11
235,734Michał
When Tomasz celebrates name day
Tomasz appears 8 times in the Polish name day calendar. The main date is 28 January.