| Acronym | Definition |
|---|
| ACNN➣Australian Conference on Neural Networks |
| ACNN➣Association of Child Neurology Nurses |
| ACNN➣Australian College of Neonatal Nurses (est. 1992) |
| ACNN➣Autosport Competitie Noord Nederland (Dutch: Northern Netherlands Autosport Competition) |
| ACNN➣Age Concern Nottingham and Nottinghamshire (UK) |