Dejan
A South Slavic borrowing, from the verb *dejati*, to act or do: the name marks its bearer as someone who does. In Poland it stays rare, carried by only about 166 men and given to no newborns in recent years.
Dejan Pronunciation
Dejan is pronounced DE-yahn (/ˈdɛjan/).
What Dejan means
Where Dejan comes from and what it has meant to the people who carry it.
Dejan grows from the Slavic verb dejati, to act, to do. The name makes a plain claim about the person who holds it. Here is one who does.
That working sense is the whole of it. In Polish the meaning lands as działać, robić, an ordinary verb before it was ever a name. Dejan is common across the South Slavic world, in Serbia, North Macedonia, and Slovenia, and it reaches Poland as a borrowing rather than a native form.
One documented bearer stands out. Sevastokrator Dejan was a Serbian magnate of the fourteenth century, married to Teodora, sister of Emperor Stefan Dušan. He held a large province around Kumanovo and rebuilt the Zemen Monastery. His sons gave their name to the House of Dejanović, later called Dragaš.
So the name has a paper trail long before any Polish class register lists it. The verb underneath has not shifted. Dejan still means to do.
How many people are named Dejan
1 in 128591 men in Poland is named Dejan. 166 people carry it in the 2025 register: rank #2496 among male names.
Dejan as a middle name
Dejan is a first name for 166 men in Poland and a middle name for another 19, a 90/10 split. In the men's middle-name ranking it sits 2054th, between Dayan (19) and Demian (19).
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#2052 Daniël19
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#2053 Dayan19
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#2054 Dejan19
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#2055 Demian19
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#2056 Dexter19