Cognomen Sifakis (Sifakis 
) , across the world, is quite a rare last name. The surname Sifakis is characteristic of Greece, where it is quite a common surname, Cyprus, where it is quite a rare surname, and Albania, where it is a rare surname. In absolute terms, it is the most numerous in Greece, Romania, and the United States.
| VARIANT | COUNTRY |
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| Sifakis | Greece, Romania, Albania, United States, Cyprus |
| grigoris m. sifakis Greek classical philologist, GR (b. 1935) |
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| carl sifakis (b. 1929) |
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| eftychios dimitrios sifakis Ph.D. Stanford University 2007 |
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| emmanouil sifakis researcher |
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| joseph sifakis researcher |
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| catherine sifakis FR |
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Mr, Taryn, Tarya, Nikol, Nikos, Elena, Ember, Haris, Helen, Vicky, Janis, Ilias, Xaris, Marios, Sergio, Andrew, Angela, Amalia, Bessie, Kostas, Pavlos, Iosif, Georg, Arist, Steve, Ria, Jim, Mike, Stav, Alex, Aris, Akis, Dana, Greg, Jane, John, Jean, Juan, Nick, Niko, Ioan, Maria, Manos, Minas, Susan, Sofia, Petros, and George