Cognomen Olasz (Olasz 
, Vlah 
, Volcae) , all around the world, is quite a rare surname. The surname Olasz is habitual in Hungary, where it is quite a common surname, Croatia, and Moldova. Much less frequently, Olasz is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Olasz | Germany, Romania, Hungary, United States, Poland |
| Vlah | Romania, Hungary, Moldova, Croatia, Serbia |
| olasz lajos HU (b. 1894) |
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| péter olasz RO (b. 1895) |
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| erzsi olasz Hungarian actress, RO (b. 1915) |
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| richard olasz American politician, US (b. 1930) |
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| olasz jános Hungarian politician (1937-2020), HU (b. 1937) |
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olasz anna swimmer from Hungary, HU (b. 1993) |
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| olasz ferenc HU (b. 1943) |
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| olasz lajos Hungarian historian, HU (b. 1955) |
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| olasz sándor HU (b. 1949) |
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| olasz ágnes Hungarian actress, HU (b. 1964) |
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| dániel olasz researcher |
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| edit olasz researcher |
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| judit olasz researcher |
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| balázs olasz researcher |
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| ferenc olasz researcher |
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