Family name Cieslowski (Cieslowski 
) , around the world, is a rare surname. The surname Cieslowski is habitual in Poland, where it is a rare surname, Argentina, where it is a very rare surname, and Canada. In absolute terms, it is the most numerous in the United States, Poland, and Argentina. Likewise, Cieslowski is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Cieslowski | Poland, United States, Argentina, Canada |