Cognomen Mattaj (Mattaj 
) , in all the world, is a very rare family name. The family name Mattaj is habitual in Slovakia, where it is a rare surname, Switzerland, where it is a very rare surname, and Germany. Very seldom, Mattaj is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Mattaj | Germany, India, Switzerland, Slovakia |
|
iain mattaj Director General, European Molecular Biology Laboratory, 2005 - 2018, GB (b. 1952) |
|