Konstantinos
The Greek form of a Roman imperial name, from Latin constans, "constant, steadfast". In Poland it stays both rare and Greek: fewer than 300 men carry it, while the homegrown Konstanty and its Kostek do the everyday work.
Konstantinos Pronunciation
Konstantinos is pronounced kons-tahn-TEE-nos (/kɔnstanˈtinɔs/).
What Konstantinos means
Where Konstantinos comes from and what it has meant to the people who carry it.
Konstantinos is the Greek form of a Roman imperial name. Its meaning traces to the Latin constans, "constant, steadfast," the same root behind English words like constancy. Emperor Constantine the Great, who moved the empire's capital east and gave his name to Constantinople, carried the Greek version, Konstantinos, on Byzantine coins and charters.
In Poland the name settled into its own forms. Konstanty is the Polish variant, worn in the twentieth century by the poet Konstanty Ildefons Gałczyński. Kostek is the everyday diminutive, the version a friend uses.
The short meaning stays close to the surface: stały, niezłomny, constant and unyielding. Read a school register and you might find a Konstanty near the top, formal in full. His classmates call him Kostek by lunch.
The name has not drifted far from constans, and the Polish Konstanty keeps that meaning plain: stały, niezłomny.
How many people are named Konstantinos
1 in 74899 men in Poland is named Konstantinos. 285 people carry it in the 2025 register: rank #1798 among male names.
Konstantinos's popularity over time
Fewer than 2 boys were given the name in 2025. It has been stable for a decade.
Where Konstantinos is most popular
Konstantinos is most popular in Lower Silesian, 588% above the national average (2 boys born 2019–2025), followed by Masovian (+205%).
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Lower Silesian2 boys born+588%
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Masovian2 boys born+205%
Konstantinos as a middle name
Konstantinos is a first name for 285 men in Poland and a middle name for another 35, an 89/11 split. In the men's middle-name ranking it sits 1385th, between József (35) and Lutosław (35).
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#1383 Ernestyn35
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#1384 József35
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#1385 Konstantinos35
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#1386 Lutosław35
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#1387 Mahesh35