| Herbert Grassler | |
| Birth Date: | 1976 5, df=y |
| Birth Place: | Wolfsberg, Austria |
| Youthyears1: | 1989–1990 |
| Youthclubs1: | Wolfsberger AC |
| Years1: | 1991–1992 |
| Clubs1: | ATSV Wolfsberg |
| Years2: | 1992–1997 |
| Caps2: | 114 |
| Goals2: | 5 |
| Years3: | 1997–1998 |
| Clubs3: | Wüstenrot Salzburg |
| Caps3: | 18 |
| Goals3: | 2 |
| Years4: | 1998–2002 |
| Clubs4: | LASK Linz |
| Caps4: | 111 |
| Goals4: | 7 |
| Years5: | 2002–2004 |
| Clubs5: | SV Ried |
| Caps5: | 37 |
| Goals5: | 0 |
| Years6: | 2004–2005 |
| Years7: | 2005–2007 |
| Clubs7: | SK St. Andrä |
| Caps7: | 25 |
| Goals7: | 0 |
| Years8: | 2007–2009 |
| Clubs8: | WAC St. Andrä |
| Caps8: | 1 |
| Goals8: | 0 |
| Years9: | 2010 |
| Clubs9: | SC St. Stefan/L. |
| Caps9: | 3 |
| Goals9: | 0 |
| Nationalyears1: | 1993–1995 |
| Nationalteam1: | Austria U21 |
| Nationalcaps1: | 20 |
| Nationalgoals1: | 0 |
| Manageryears1: | 2007–2009 |
| Managerclubs1: | Wolfsberger AC Jugend |
| Manageryears2: | 2009–2010 |
| Managerclubs2: | AKA Kärnten U17 |
| Manageryears3: | 2010–2013 |
| Managerclubs3: | Wolfsberger AC Jugend |
| Manageryears4: | 2014–2015 |
| Managerclubs4: | Wolfsberger AC Jugend |
Herbert Grassler (born 26 May 1976) is an Austrian football manager and former footballer who played as a midfielder.