Izaak
A Hebrew name meaning "he will laugh". It stays rare in Poland: fewer than 200 men and boys carry it, and most Poles will never meet one.
Izaak Pronunciation
Izaak is pronounced ee-ZAH-ahk (/iˈzaak/).
What Izaak means
Where Izaak comes from and what it has meant to the people who carry it.
Izaak comes from Hebrew, from the form Yitzhak, and it means "he will laugh." The Book of Genesis attaches the name to Sarah, who laughed on hearing she would bear a son in old age. The name records a reaction rather than a plan. Inside the older form sits the Hebrew root tsakhaq, to laugh, which gives the meaning its footing.
In a Polish class register the name reads plainly. Izaak. The teacher calls it, a boy answers, and the biblical laughter stays folded up small.
The spelling keeps its double a in Polish, Izaak, where English settled on Isaac. On imieniny the person named Izaak gets flowers or a small gift, the same as any name-day. What the name still says, under all of that, is "he will laugh."
When Izaak celebrates name day
Izaak appears 4 times in the Polish name day calendar, never as a main name. The first of these dates is 11 April.
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 Izaak
1 in 137717 men in Poland is named Izaak. 155 people carry it in the 2025 register: rank #2596 among male names.
Izaak's popularity over time
3 boys were given the name in 2025, ranking #1259 among newborns. It has been climbing since 2020.
Where parents choose Izaak
Izaak is most popular in Łódź, 582% above the national average (4 boys born 2019–2025), followed by Pomeranian (+193%) and Lesser Poland (+90%).
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Łódź
+582%1 in 31,680 babies
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Pomeranian
+193%1 in 73,661 babies
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Lesser Poland
+90%1 in 113,458 babies
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Łódź+582% 4 born1 in 31,680 babies+582%
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Pomeranian+193% 2 born1 in 73,661 babies+193%
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Lesser Poland+90% 2 born1 in 113,458 babies+90%
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Silesian+90% 2 born1 in 113,792 babies+90%
Izaak as a middle name
Izaak is a first name for 155 men in Poland and a middle name for another 155, a 50/50 split, almost evenly. In the men's middle-name ranking it sits 560th, between Gerald (156) and Krishna (155).
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#558 Bartek156
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#559 Gerald156
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#560 Izaak155
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#561 Krishna155
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#562 Kristian154