Cognomen Slowek (Slowek 
) , worldwide, is a rare last name. The surname Slowek is habitual in Poland, where it is a rare surname, Germany, where it is a very rare surname, and Spain. In absolute terms, it is commonest in Poland, the United States, and Germany. Likewise, Slowek is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Slowek | Germany, Spain, United States, Poland, Canada |