Family name Леис (Leis 
, Leys , Леис 
) , in all the world, is a common surname. The family name Леис is habitual in Estonia, where it is quite a common surname, Belgium, and Uruguay, where it is quite a rare surname. Measured by absolute frequency, this name is the most popular in Germany, the United States, and Belgium. Much less frequently, Леис is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Leis, Leys | Germany, France, Argentina, United States, Belgium |
| Леис | Kazakhstan, Russia |