Last name Ustáriz (Ustáriz 
) , around the world, is a very rare surname. The last name Ustáriz is habitual in Colombia, where it is a very rare surname, Spain, and Venezuela.
| VARIANT | COUNTRY |
|---|---|
| Ustáriz | Argentina, Venezuela, Spain, Colombia |
| casimiro de ustáriz Spanish nobleman, ES (b. 1699) |
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francisco javier ustáriz President of Venezuela, VE (b. 1772) |
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josé ustáriz y escribano Spanish physician (1849-1904), ES (b. 1849) |
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rosario ustáriz borra Spanish poet, Aragonese-language writer, ES (b. 1927) |
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