Family name Ygnace (Ygnace 
) , worldwide, is a very rare last name. The cognomen Ygnace is characteristic of France, where it is a very rare surname, Australia, and the United States, where it is an extremely rare surname. More prevalently, Ygnace is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ygnace | France, Democratic Republic of the Congo, United States, Australia |