| 1957–1960 | Mag. Karl Kowarik |
| 1978–1980 | Dipl.-Ing. Dr. Helmut Krünes |
| 1982–1986 | Walter Grabher-Meyer |
| 1986–1988 | Dr. Norbert Gugerbauer |
| 1988–1990 | Dr. Heide Schmidt |
| 1988–1991 | Dipl.-Ing. Mathias Reichhold |
| 1990–1995 | Ing. Walter Meischberger |
| 1990–1994 | Herbert Scheibner |
| 1991–1992 | Dr. Karl Schnell |
| 1993–1994 | Mag. Karl-Heinz Grasser |
| 1996–1999 | Ing. Peter Westenthaler |
| 1999–2001 | Theresia Zierler |
| 2000–2001 | Ing. Gerhard Fallent |
| 2000–2002 | Ing. Mag. Peter Sichrovsky |
| 2001–2002 | Mag. Karl Schweitzer |
| 2002–2004 | Mag. Dr. Magda Bleckmann-Jost |
| 2004–2005 | Dipl.-Ing. Uwe Scheuch |
| 2005–2018 | Herbert Kickl |
| 2005–2020 | Harald Vilimsky |
| 2005–2007 | Dipl.-Ing. Karl-Heinz Klement |
| 2018–2018 | Marlene Svazek |
| 2018–2020 | Christian Hafenecker, MA |
| 2020–to date | Michael Schnedlitz |
| 2023–to date | Christian Hafenecker, MA |
