Surname Jannetta (Жаннетта 
, Jannetta 
, جانيتا) , in the entire world, is a rare cognomen. The last name Jannetta is characteristic of France, where it is a rare surname, Canada, and New Zealand. In absolute terms, it is the most numerous in France, the United States, and the United Kingdom. More prevalently, Jannetta is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Жаннетта | Kazakhstan, Ukraine, Belarus, Kyrgyzstan, Russia |
| Jannetta | United Kingdom, South Africa, Canada, United States, France |
| ann jannetta American Japanologist, US (b. 1932) |
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| peter j. jannetta American neurosurgeon, US (b. 1932) |
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| patti jannetta actor (b. 1953) |
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| jannetta s steyn researcher |
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