Cognomen טאצ'י (טאצ'י 
, Thaçi 
) , in the world, is quite a rare family name. The family name טאצ'י is habitual in Kosovo, where it is quite a common surname, Albania, and Slovenia, where it is quite a rare surname. Not in comparison with a country's population, it is the most numerous in Kosovo, Albania, and Serbia.
| VARIANT | COUNTRY |
|---|---|
| טאצ'י | Israel |
| Thaçi | Austria, Albania, Kosovo, Serbia, Slovenia |