Last name Arnăutu (Arnăutu 
) , across the world, is a rare surname. The cognomen Arnăutu is habitual in Eastern Europe, particularly Romania, where it is a rare surname.
| eugenu arnăutu Romanian politician, RO (b. 1952) |
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| cătălin-ciprian arnăutu Romanian politician from Rast, Dolj County, RO |
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| sergiu arnăutu Romanian association football player, RO (b. 1990) |
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