Surname Donaj (Donaj 
) , globally, is a rare last name. The surname Donaj is habitual in Slovenia, where it is quite a rare surname, Albania, and Poland, where it is a rare surname. Not in comparison with a country's population, this name is the most popular in India, Poland, and Germany. Also, Donaj is the forename as well as the last name.
| maria donaj PL (b. 1923) |
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| łukasz donaj Polish university teacher and political scientist, PL (b. 1976) |
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| gregor donaj SI |
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