Surname Szelążek (Szelążek 
) , in the world, is a rare last name. The cognomen Szelążek is characteristic of Eastern Europe, particularly Poland, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Szelążek | Poland |
|
adolf piotr szelążek PL (b. 1865) |
|
| kacper filip szelążek Polish countertenor., PL (b. 1984) |
|