Cognomen Рейсер (Reiser 
, Reyser 
, Рейсер 
) , throughout the world, is a common last name. The cognomen Рейсер is habitual in Western Europe, particularly Luxembourg, where it is quite a common surname, Germany, and Switzerland, where it is quite a rare surname. Not in comparison with a country's population, this name is the most popular in Germany, the United States, and France. Very seldom, Рейсер is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Reiser | Germany, Austria, Switzerland, United States, France |
| Reyser | Germany, United States, Argentina, France, Peru |
| Рейсер | Kazakhstan, Russia |
| соломон абрамович рейсер UA (b. 1905) |
|