Surname Лаух (Laux 
, Lauh 
, Laukh ) , in the entire world, is a common family name. The cognomen Лаух is habitual in Western Europe, particularly Luxembourg, where it is quite a common surname, Germany, where it is quite a rare surname, and Switzerland. In absolute terms, it most frequently occurs in Germany, the United States, and Brazil. Much less frequently, Лаух is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Laux | Germany, Switzerland, United States, France, Brazil |
| Lauh | Germany, Indonesia, United States, India, Brazil |
| Laukh | India |
| Лаух | Russia, Ukraine |