Croatia
| Leading Champions |
| No champions from this country |
| Leading Race Winners |
| No race winners from this country |
| Most Successful Drivers |
| No citizens from this country have entered a race |
| *The place where Aldo and Mario Andretti were born, at the time in Italy, is now in Croatia |
| *The place where Pete Romcevich was born is also now in present-day Croatia |