Family name Kostakis (Kostakis 
, Костакис 
, Κωστάκης ) , around the globe, is quite a rare last name. The cognomen Kostakis is habitual in Greece, where it is quite a common surname, Cyprus, where it is quite a rare surname, and Denmark, where it is a rare surname. Measured by absolute frequency, it is commonest in Greece, the United States, and Australia. Much less frequently, Kostakis is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kostakis | Australia, Greece, Cyprus, United States, Denmark |
| Костакис | Ukraine, Russia |
| Κωστάκης | Greece |
Constantios, Costakis, Costantinos, Costas, Costis, Cottas, Dinos, Konstantinos, Konstantios, Konstantis, Konstantínos, Kostas, Kostis, Kosztasz, Kottas, Kóstas, Ntinos, Takis, Κωνσταντής, Κωνσταντίνος, Κωστής, Κωστακης, Κώστας, Ντίνος, Τάκης, Константий, Константинос, Константінос, Констанций, Костакіс, Костас, קונסטנטין, قسطنطين, and كوستاس
| alik kostakis Brazilian journalist, BR (b. 1928) |
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william kostakis Australian, novelist, AU (b. 1989) |
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| thomas kostakis researcher |
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| ioannis d kostakis researcher (ORCID 0000-0001-6610-4978) |
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| alexandros kostakis economist (University of Manchester) |
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| george e. kostakis researcher |
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| kostakis gkiatis researcher |
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| marios kostakis researcher |
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| ioannis k kostakis researcher (ORCID 0000-0002-9901-5223) |
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| vasilis kostakis professor at Tallinn University of Technology, futurologist (b. 1985) |
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| ioannis kostakis |
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Mr, Greg, Levi, Lisa, Lori, John, Tara, Theo, Tony, Nick, Dino, Niki, Evan, Evie, Irma, Ioan, Olga, Maria, Manos, Matia, Maida, Eric, Dina, Dawn, Ryan, Ms, Ann, Gus, Liz, Jim, Tom, Eva, Mary, Mark, Matt, Mike, Alex, Anna, Anja, Akis, Cris, Katy, Kyle, Paul, Pete, Rose, Sakis, and Susan