Family name Mandache (Mandache 
) , worldwide, is quite a rare surname. The cognomen Mandache is habitual in Romania, where it is quite a common surname, New Zealand, where it is a rare surname, and Greece. Measured by absolute frequency, it is the most numerous in Romania, Italy, and Germany. Very seldom, Mandache is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Mandache | Italy, United States, United Kingdom, Romania, Germany |
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mandache leocov Romanian botanist (1928-2018), RO (b. 1928) |
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rodica mandache Romanian actress, RO (b. 1943) |
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| mihai mandache Romanian swimmer, RO (b. 1960) |
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| nicolae b. mandache researcher, RO |
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| simina mandache Romanian basketball player, RO (b. 1981) |
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| andrei mandache basketball player (1987-), RO (b. 1987) |
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Mr, Oana, Maria, Mihai, Sorin, Alina, Andre, Andra, Crina, Paula, Petru, Rares, Delia, Diana, Doina, Laura, Lidia, Elena, Edith, Eugen, Irina, Ionut, Ioan, Vlad, Vera, Nina, Ms, Ana, Dan, Edi, Ion, Miki, Alex, Alin, Anca, Aida, Ioana, Paul, Dana, Dina, Dinu, Doru, Gabi, Gaby, Gelu, Leon, Jean, Nicu, Radu, and Iosif