Family name Ioja (Ioja 
, Józsa 
) , all around the world, is quite a rare surname. The surname Ioja is characteristic of Eastern Europe, particularly Romania, where it is quite a rare surname, Hungary, and Slovakia, where it is a rare surname. In absolute terms, it is commonest in Romania, Hungary, and Italy. Very seldom, Ioja is the forename as well as the last name.
| petru ioja RO (b. 1893) |
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viorica ioja Romanian rower, RO (b. 1962) |
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| ioja sinesie (b. 1916) |
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| simona ioja researcher (ORCID 0000-0001-6100-2665) |
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| cristian ioja researcher ORCID ID = 0000-0001-6106-5105, RO |
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