Surname Justiniani (Justiniani 
) , throughout the world, is quite a rare family name. The family name Justiniani is habitual in Panama, where it is quite a common surname, Peru, where it is quite a rare surname, and Philippines. Much less frequently, Justiniani is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Justiniani | Panama, Mexico, Philippines, Peru, Tanzania |
| ange justiniani Roman Catholic bishop (b. 1520) |
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| benedetto justiniani Italian theologian (b. 1550) |
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josé justiniani ramírez de arellano ES (b. 1800) |
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| pablo justiniani Panamanian weightlifter (b. 1952) |
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| mark justiniani Filipino artist, PH (b. 1966) |
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| iakobina justiniani Est 1525 - |
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| nicholas justiniani Italian noble and Benedictine monk |
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| pier giuseppe justiniani - Abt 1589 |
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