Surname Collias (Collias 
) , in the entire world, is a rare last name. The cognomen Collias is habitual in France, where it is a rare surname, Greece, and the United States, where it is a very rare surname.
| VARIANT | COUNTRY |
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| Collias | Australia, Greece, France, Canada, United States |
| john collias American painter and illustrator (1918-2017), US (b. 1918) |
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| nicholas elias collias (b. 1914) |
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| elsie c. collias (b. 1920) |
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| daphne collias researcher |
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| peter collias |
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Mr, Dawn, Dina, Dimi, Gary, Greg, Gina, Lily, Lisa, Lula, Jane, Jake, John, Jean, Jill, Tana, Tara, Tony, Tina, Tino, Tula, Nick, Dean, Elsa, Pete, Keri, Ms, Mia, Ann, Art, Pat, Ray, Gus, Lou, Jim, Ted, Tim, Val, Mary, Mick, Alan, Anne, Abbi, Adam, Acho, Bess, Bill, Kiki, and Eric