Family name Dajč (Dajč 
, Дайч 
) , globally, is a rare cognomen. The family name Dajč is characteristic of Croatia, where it is a rare surname, Czechia, and Kazakhstan. Not in comparison with a country's population, it is the most numerous in Russia, Ukraine, and Kazakhstan.
| VARIANT | COUNTRY |
|---|---|
| Dajč | Croatia, Czechia |
| Дайч | Kazakhstan, Russia, Ukraine |
| jaroslav dajč CZ (b. 1943) |
|
|
| jiří dajč CZ (b. 1947) |
|