Family name Opalka (Opalka 
, Опалка 
, Opałka 
) , all over the world, is quite a rare cognomen. The surname Opalka is habitual in Eastern Europe, particularly Poland, where it is quite a rare surname, Slovakia, and Czechia. In absolute terms, this name is the most popular in Poland, Germany, and the United States. Likewise, Opalka is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Opalka | Germany, Czechia, United States, Poland, Slovakia |
| Опалка | Ukraine, Russia |
| Opałka | Poland, United Kingdom, United States |
| Opálka | Czechia, Slovakia |
| eduard opalka German politician, DE (b. 1893) |
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| bruno opalka (b. 1907) |
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| catherine e. opalka researcher (ORCID 0000-0002-9212-5630) |
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