Last name Rosca (Rosca 
, Rusk 
, Росца 
) , in all the world, is a common surname. The cognomen Rosca is habitual in Moldova, where it is a common surname, Romania, and Ireland, where it is quite a rare surname. Measured by absolute frequency, it most frequently occurs in Romania, Moldova, and the United States. Very seldom, Rosca is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Rosca | United States, Romania, Moldova, Democratic Republic of the Congo, Italy |
| Rusk | United Kingdom, United States, Germany, Canada, Brazil |
| Росца | Russia |
| gabriel rosca French actor, FR (b. 1895) |
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| ninotchka rosca Filipino activist and writer, PH (b. 1946) |
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| justinian rosca Ph.D. University of Rochester 1997 (b. 1959) |
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| monika rosca Polish actress, PL (b. 1961) |
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| mihaela silvia rosca RO (b. 1957) |
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| julia claudia mirza rosca RO (b. 1965) |
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| madeleine rosca Australian artist, writer (born 1977), AU (b. 1977) |
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| alexandru rosca badminton player, RO (b. 1980) |
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| andreea rosca researcher (ORCID 0000-0002-4541-6371) |
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| mariana g rosca researcher |
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| raluca ioana rosca Ph.D. University of Florida 2001 |
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| elena cecilia rosca researcher, RO |
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| irina rosca researcher |
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| marcel rosca |
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| rosca mihai (b. 1987) |
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