Janiak
Janiak is a family name for the following people:
- Christoph Janiak (* 1961), German chemist and university professor
- Claude Janiak (* 1948), Swiss politician
- Edward Janiak (* 1952), Bishop of Kalisz since 2012
- Jacek Janiak (* 1970), former German-Polish soccer player
- Maciej Janiak (* 1973), Polish football player
