Surname Trájer (Trájer 
) , around the globe, is a very rare cognomen. The last name Trájer is habitual in Eastern Europe, particularly Hungary, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Trájer | Hungary |
| attila j trájer researcher (ORCID 0000-0003-3248-6474) |
|