Cognomen לייסן (Leysen 
, לייסן 
) , worldwide, is quite a rare family name. The surname לייסן is characteristic of Western Europe, particularly Belgium, where it is quite a common surname, Luxembourg, where it is quite a rare surname, and Netherlands, where it is a rare surname. Not in comparison with a country's population, this name is the most popular in Belgium, Netherlands, and the United States. Much less frequently, לייסן is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Leysen | Portugal, France, United States, Netherlands, Belgium |
| לייסן | Israel |