All over the world, Janeczek (Janeczek 
) is an extremely rare unknown gender first name. Much less frequently, Janeczek is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Janeczek | Germany, Austria, United States, Poland, France |
| longin janeczek Polish association football player (1920-2001), PL (b. 1920) |
|