Cognomen Łotr (Lotter 
, Łotr 
) , in all the world, is quite a common surname. The last name Łotr is habitual in South Africa, where it is quite a rare surname, Namibia, and Germany. Not in comparison with a country's population, the name is most common in South Africa, Germany, and the United States. Much less frequently, Łotr is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Lotter | Austria, Australia, United States, Germany, South Africa |
| Łotr | Poland |