Family name Mostazo (Mostazo 
) , around the world, is a rare last name. The surname Mostazo is habitual in Spain, where it is a rare surname, Argentina, and Brazil, where it is a very rare surname. Likewise, Mostazo is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Mostazo | Spain, Chile, Argentina, France, Brazil |
| juan mostazo Spanish composer of popular songs, ES (b. 1903) |
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| araceli mostazo romeo ES (b. 1979) |
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