| Alexander Suppantschitsch | |
| Birth Date: | 14 June 1972 |
| Birth Place: | Austria |
| Position: | Defender |
| Youthyears1: | –1989 |
| Youthclubs1: | Austria Klagenfurt |
| Years1: | 1989–1992 |
| Years2: | 1992 |
| Years3: | 1992–1993 |
| Clubs3: | WSG Brückl |
| Years4: | 1993–1997 |
| Clubs4: | Austria Klagenfurt |
| Years5: | 1997 |
| Clubs5: | SK Treibach |
| Years6: | 1997–1999 |
| Years7: | 1999–2000 |
| Clubs7: | SC Landskron |
| Years8: | 2000–2002 |
| Clubs8: | Friesacher AC |
| Years9: | 2002–2004 |
| Years10: | 2004–2007 |
| Clubs10: | Annabichler SV |
| Years11: | 2007–2010 |
| Clubs11: | HSV Klagenfurt |
| Years12: | 2010–2011 |
| Clubs12: | Annabichler SV |
| Manageryears1: | 2008 |
| Managerclubs1: | HSV Klagenfurt |
| Manageryears2: | 2009–2013 |
| Managerclubs2: | Annabichler SV |
| Manageryears3: | 2014 |
| Manageryears4: | 2015– |
| Managerclubs4: | ASKÖ Wölfnitz |
Alexander Suppantschitsch (born 14 June 1972) is a former Austrian footballer and current manager. He currently manages ASKÖ Wölfnitz.