Last name Janitza (Janitza 
) , globally, is a rare cognomen. The last name Janitza is habitual in Latin America and the Caribbean, particularly Nicaragua, where it is a rare surname, Honduras, and Venezuela. In absolute terms, this name is the most popular in Germany, Venezuela, and Nicaragua. More frequently, Janitza is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Janitza | Germany, Venezuela, Bolivia, United States, Puerto Rico |
| jean janitza French linguist (1940-2002), FR (b. 1940) |
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| janitza l montalvo-ortiz researcher |
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| silke janitza researcher (ORCID 0000-0003-0948-1501) |
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| silke janitza |
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