| Abbreviation | Definition |
|---|---|
| ACG | Anna Chambers Goldberg |
| ACG | Arbitrary Code Guard |
| ACG | Area de Conservacion Guanacaste |
| ACG | Associated Carrier Group |
| ACG | Atlanta Computer Group |
| ACG | Austin Classical Guitar |
| ACG | Automatic Code Gapping |
| ACGA | An Comunn Gàidhealach, Ameireaga |
| ACGB | Asemblea Cultural Galega de Barcelona |
| ACGB | Association cantonale genevoise de badminton |
| ACGB | Australian Centre for Grief and Bereavement |
| ACGB | Auto Collect Games Bonuses |
| ACGC | Advancing Competency for Geriatric Care |
| ACGC | Advent Christian General Conference |
| ACGC | Alberta Council for Global Cooperation |
| ACGC | Arabian Castles for General Contracting |
| ACGC | Atwater Cosmos Grove City |
| ACGC | Austin Child Guidance Center |
| ACGD | Air Cooled Grille Diffuser |
| ACGD | Avid Creative Graphic Design |