Cognomen Willem Lodewijk (Willem Lodewijk 
) , in the world, is an extremely rare last name. The cognomen Willem Lodewijk is habitual in Western Europe, particularly Netherlands, where it is a very rare surname. More frequently, Willem Lodewijk is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Willem Lodewijk | Netherlands |
Guilherme Luiz, Guillaume-Louis, Guillermo Luis, Wilhelm Ludwig, and William Louis