Cognomen Mastoras (Mastoras 
) , around the world, is quite a rare family name. The cognomen Mastoras is habitual in Greece, where it is quite a common surname, Bulgaria, where it is a rare surname, and Australia, where it is a very rare surname. Measured by absolute frequency, it is commonest in Greece, the United States, and Germany.
| VARIANT | COUNTRY |
|---|---|
| Mastoras | Germany, Greece, Australia, Bulgaria, United States |
| ilias mastoras chess player (b. 1974) |
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| george mastoras researcher |
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Mr, Molly, Sakis, Sonia, Annie, Becky, Bob O, Karen, Panos, Domna, Maria, Grace, Terry, Nancy, Nikos, Elias, Elena, Eleni, Haris, Fotis, Ilias, Gregg, Marios, Fran, Nina, Bob, Pam, Gus, Jim, Eva, Mary, Mark, Mira, Alex, Faye, Akis, Paul, Pete, Dina, Greg, Lisa, John, Tina, Tino, Nick, Bill, and Mitsos