Cognomen Biltz (Pilz 
, Biltz 
, Bilț) , globally, is a common last name. The cognomen Biltz is characteristic of Austria, where it is quite a common surname, Germany, and Czechia, where it is quite a rare surname. Measured by absolute frequency, it most frequently occurs in Germany, Austria, and the United States. Very seldom, Biltz is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Pilz | Brazil, United States, Germany, Czechia, Austria |
| Biltz | Israel, France, Canada, United States, Germany |
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karl friedrich biltz German author, DE (b. 1830) |
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| karl friedrich biltz DE (b. 1796) |
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heinrich biltz German chemist, DE (b. 1865) |
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| ernst biltz German chemist and pharmacist, DE (b. 1822) |
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wilhelm biltz German chemist (1877-1943), DE (b. 1877) |
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| max biltz DE (b. 1863) |
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mark biltz American pastor and author, US (b. 1956) |
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| karl peter biltz German actor and director, DE (b. 1908) |
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| martin biltz (b. 1900) |
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