Family name Costero (Costero 
) , in all the world, is a rare surname. The surname Costero is habitual in Venezuela, where it is quite a rare surname, Ghana, where it is a rare surname, and Argentina. Not in comparison with a country's population, it is the most numerous in Venezuela, Ghana, and Spain. Very seldom, Costero is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Costero | Spain, Colombia, Argentina, Ghana, Venezuela |
| francesco costero 1818-, IT (b. 1818) |
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| isaac costero Spanish university professor, ES (b. 1903) |
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| ana m costero researcher |
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