Surname Casias (Casias 
) , around the world, is quite a rare last name. The surname Casias is habitual in the United States, where it is a rare surname, Guatemala, and Peru. Measured by absolute frequency, it is commonest in the United States, Mexico, and Peru.
| VARIANT | COUNTRY |
|---|---|
| Casias | Canada, Mexico, Guatemala, United States, Peru |
|
pearl casias Southern Ute tribal leader |
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| johnny gabriel casias San Juan-Navajo artist, US (b. 1934) |
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| philip tim casias (born 1963) (b. 1963) |
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| adrian casias researcher ORCID ID = 0000-0002-6781-9294 |
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