Last name Walenczewski (Walenczewski 
) , around the globe, is a very rare cognomen. The surname Walenczewski is habitual in Poland, where it is a rare surname, and the United States, where it is an extremely rare surname. Likewise, Walenczewski is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Walenczewski | Poland, United States |