Cognomen Ігнаці (Ignotas 
, Ігнаці 
) , in all the world, is a rare family name. The surname Ігнаці is characteristic of Lithuania, where it is quite a rare surname, Ukraine, where it is a very rare surname, and the United Kingdom, where it is an extremely rare surname. In absolute terms, it is the most numerous in Lithuania, Ukraine, and Russia. Much less frequently, Ігнаці is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ignotas | Brazil, Russia, United Kingdom, United States, Lithuania |
| Ігнаці | Belarus, Ukraine |