| Abfaltersbach | Administration of the municipality Abfaltersbach |  |
| Absam | Municipal office Absam | |
| Absdorf | Administration of the municipality Absdorf | |
| Abtenau | Municipal office Abtenau | |
| Achau | Municipal office Achau | |
| Achenkirch | Municipal office Achenkirch | |
| Aderklaa | Municipal office Aderklaa | |
| Adlwang | Municipal office Adlwang | |
| Admont | Municipal office Admont | |
| Adnet | Municipal office Adnet | |
| AEBW | Arbeitsgemeinschaft Evangelische Bildungswerke in Österreich (AEBW) | |
| Afiesl | Administration of the municipality Afiesl | |
| Aflenz Kurort | Administration of the municipality Aflenz Kurort | |
| Aflenz Land | Municipal office Aflenz Land | |
| Afritz am See | Municipal office Afritz am See | |
| AGES | Brigadier Peter Klocko. Arbeitsgemeinschaft evangelischer Soldaten im Bundesheer (AGES) | |
| Aggsbach Markt | Administration of the municipality Aggsbach Markt | |
| Ahorn | Administration of the municipality Ahorn | |
| Aibl | Municipal office Aibl | |
| Aich | Administration of the municipality Aich | |