Last name Petrošius (Petrošius 
) , around the globe, is a very rare family name. The cognomen Petrošius is characteristic of Northern Europe, particularly Lithuania, where it is quite a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Petrošius | Lithuania |
| jonas petrošius LT (b. 1921) |
|
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| pranas petrošius Lithuanian politician, LT (b. 1951) |
|
|
| darius petrošius Lithuanian politician, LT (b. 1975) |
|
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| audrius petrošius |
|