| Mario Posch | |
| Height: | 1.85 m[1] |
| Birth Date: | 1967 7, df=yes |
| Birth Place: | Bad Radkersburg, Austria[2] |
| Position: | Defender |
| Youthclubs1: | TUS Mureck |
| Years1: | 1989–1991 |
| Clubs1: | SV Flavia Solva Wagna |
| Years2: | 1991–1992 |
| Clubs2: | FC Swarovski Tirol |
| Years3: | 1992–1994 |
| Clubs3: | Bayer Uerdingen |
| Caps3: | 20 |
| Goals3: | 1 |
| Years4: | 1994–2000 |
| Clubs4: | Sturm Graz |
| Nationalyears1: | 1992 |
| Nationalteam1: | Austria |
| Nationalcaps1: | 2 |
| Nationalgoals1: | 0 |
| Manageryears1: | 2002–2005 |
| Managerclubs1: | Sturm Graz (reserves physio) |
| Manageryears2: | 2006 |
| Managerclubs2: | SC Schwanenstadt |
| Manageryears3: | 2006–2008 |
| Managerclubs3: | Sturm Graz (reserves athletic director) |
| Manageryears4: | 2008 |
| Managerclubs4: | SK Schwadorf (assistant) |
| Manageryears5: | 2008 |
| Managerclubs5: | Admira Wacker (assistant) |
Mario Posch (born 18 July 1967) is an Austrian football coach and a former defender.