Around the world, Hajdu (Hajdu 
, Hajdú 
, Айду 
) is a rare unisex first name. The first name Hajdu is habitual in Hungary, where it is quite a rare epicene name, and China, where it is an extremely rare masculine name. Predominantly, Hajdu is the last name as well as the forename.
| lorant hajdu Hungarian composer, HU (b. 1937) |
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| gergely hajdu Hungarian economist |
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| hajdu gergely Hungarian astronomer, HU (b. 1986) |
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| miklos hajdu |
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