Family name Poberaj (Poberaj 
) , across the world, is a rare cognomen. The family name Poberaj is characteristic of Slovenia, where it is quite a common surname, North Macedonia, where it is a rare surname, and Argentina, where it is a very rare surname.
| VARIANT | COUNTRY |
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| Poberaj | Italy, North Macedonia, Argentina, United States, Slovenia |
| savo poberaj Slovene physicist (1929-1993), SI (b. 1929) |
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| igor poberaj Slovene physicist, SI (b. 1963) |
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| boris poberaj SI |
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| gorazd poberaj SI |
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