Last name Smilkovich (Smilkovich 
) , globally, is a very rare cognomen. The surname Smilkovich is habitual in Bulgaria, where it is a rare surname, Canada, where it is an extremely rare surname, and the United States.
| VARIANT | COUNTRY |
|---|---|
| Smilkovich | Canada, United States, Bulgaria |
Смилкович, and Смилькович