Last name Testani (Testani 
) , in the world, is quite a rare cognomen. The family name Testani is habitual in Italy, where it is a rare surname, Canada, and Argentina. Not in comparison with a country's population, it is the most numerous in the United States, Italy, and Canada.
| VARIANT | COUNTRY |
|---|---|
| Testani | Canada, Brazil, Italy, United States, Argentina |
| jeffrey m testani researcher |
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| claudio testani researcher |
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| elena testani researcher |
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| elisa testani researcher |
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