Cognomen Flaška (Flasche 
, Flaška 
) , in all the world, is a rare last name. The cognomen Flaška is habitual in Czechia, where it is a rare surname, Germany, and France, where it is a very rare surname. Not in comparison with a country's population, it is commonest in Germany, Czechia, and the United States.
| VARIANT | COUNTRY |
|---|---|
| Flasche | Germany, United States, Spain, France |
| Flaška | Czechia |
| josef ignác flaška CZ (b. 1706) |
|
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| jan václav flaška (b. 1708) |
|
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| milan flaška (b. 1925) |
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| václav flaška Ph.D. Charles University 2008 |
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