| Slavko Ištvanić | |
| Birth Date: | 12 July 1966 |
| Birth Place: | Zagreb, SR Croatia, SFR Yugoslavia |
| Position: | Defender |
| Years1: | 1983–1991 |
| Years2: | 1991–1992 |
| Years3: | 1992–1995 |
| Years4: | 1996 |
| Years5: | 2000–2001 |
| Years6: | 2001 |
| Years7: | 2002 |
| Clubs7: | Dugo Selo |
| Caps1: | 94 |
| Caps2: | 20 |
| Caps3: | 84 |
| Caps4: | 10 |
| Caps5: | 11 |
| Caps6: | 14 |
| Caps7: | 6 |
| Goals1: | 2 |
| Goals2: | 0 |
| Goals3: | 0 |
| Goals4: | 0 |
| Goals5: | 0 |
| Goals6: | 0 |
| Goals7: | 0 |
| Nationalyears1: | 1991–1994 |
| Nationalteam1: | Croatia |
| Nationalcaps1: | 3 |
| Nationalgoals1: | 0 |
Slavko Ištvanić (born 12 July 1966 in Zagreb) is a retired Croatian professional footballer who played over 200 league matches for NK Dinamo Zagreb in the Croatian Prva HNL.
Ištvanić made his debut for Croatia in a June 1991 friendly match against Slovenia and earned a total of 3 caps, scoring no goals. His first was not official, though, since Croatia was still part of Yugoslavia at the time. His final international was an April 1994 friendly away against Slovakia.[1] [2]