Globally, Onintza (Onintza 
) is a rare gender-neutral forename. The first name Onintza is habitual in Southern Europe, particularly Spain, where it is a rare gender-neutral name. Very seldom, Onintza is the last name as well as the forename.
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| Onintza | United States, Spain, Mexico, Honduras, Finland |
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onintza enbeita Spanish journalist, writer and bertsolari, ES (b. 1979) |
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onintza etxebeste liras basque artist, ES (b. 1993) |
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| onintza lasa arteaga Spanish politician, ES (b. 1972) |
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| onintza sagredo researcher |
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| onintza odriozola irizar |
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| onintza belategi unzueta |
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