Family name Grajer (Грайер 
, Grajer 
) , in the entire world, is a rare last name. The cognomen Grajer is habitual in Germany, where it is a rare surname, Netherlands, where it is a very rare surname, and Argentina, where it is an extremely rare surname. Measured by absolute frequency, it most frequently occurs in Germany, Netherlands, and the United States. Very seldom, Grajer is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Грайер | Ukraine, Russia |
| Grajer | Netherlands, Argentina, Philippines, United States, Germany |