Cognomen Retera (Retera 
) , in all the world, is a rare last name. The cognomen Retera is characteristic of Netherlands, where it is quite a rare surname, Bulgaria, where it is a rare surname, and Canada, where it is an extremely rare surname. In absolute terms, it most frequently occurs in Netherlands, Bulgaria, and the United States. Also, Retera is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Retera | Netherlands, United States, Malaysia, India, Bulgaria |
| willem retera Dutch sculptor (1858-1930), NL (b. 1858) |
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| wim retera Dutch architect and artist, NL (b. 1890) |
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mark retera Dutch cartoonist, NL (b. 1964) |
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| joost retera chess player (b. 1974) |
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| dennis retera Dutch racing driver, NL (b. 1986) |
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