Family name Petrás (Petrás 
) , in the entire world, is a rare last name. The cognomen Petrás is characteristic of Eastern Europe, particularly Hungary, where it is a rare surname, Czechia, and Romania. Much less frequently, Petrás is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Petrás | Czechia, Romania, Hungary |
| mihály petrás (b. 1650) |
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petrás ince jános RO (b. 1813) |
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petrás mária Romanian folk singer from Transylvania, RO (b. 1957) |
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petrás jános Hungarian rock musician, HU (b. 1968) |
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