Surname Mancillas (Mancillas 
) , all around the world, is quite a common cognomen. The last name Mancillas is habitual in Mexico, where it is quite a rare surname, the United States, where it is a rare surname, and Canada.
| VARIANT | COUNTRY |
|---|---|
| Mancillas | Argentina, United States, Mexico, Canada, Peru |
| aida mancillas American artist |
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| alicia abig gutierrez mancillas chess player (b. 1990) |
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