Cognomen Aguiñaga (Aguiñaga 
) , all around the world, is a rare family name. The surname Aguiñaga is habitual in Latin America and the Caribbean, particularly Uruguay, where it is a rare surname, Mexico, and Argentina. In absolute terms, this name is the most popular in Mexico, Argentina, and the United States.
| VARIANT | COUNTRY |
|---|---|
| Aguiñaga | Argentina, United States, Mexico, Ecuador, Uruguay |
| rafael montejano y aguiñaga Mexican writer (1919-2000), MX (b. 1919) |
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| salvador aguiñaga Ph.D. University of Notre Dame 2018 |
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| susan aguiñaga researcher |
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| daniel aguiñaga Mexican association football player, MX (b. 1994) |
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