Cognomen Mastalski (Mastalski 
) , across the world, is a rare family name. The family name Mastalski is habitual in Poland, where it is a rare surname, the United States, where it is a very rare surname, and Germany. Likewise, Mastalski is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Mastalski | Germany, United Kingdom, United States, Poland, France |
| stanisław mastalski PL (b. 1898) |
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janusz mastalski PL (b. 1964) |
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| ryszard mastalski Polish jurist, PL (b. 1940) |
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