| Acronym | Definition |
|---|
| ARDA | American Resort Development Association |
| ARDA | a Realisation of Distributed Analysis |
| ARDA | Advanced Research and Development Activity (US government; now Disruptive Technology Office, DTO) |
| ARDA | American Religion Data Archive |
| ARDA | Association of Religion Data Archives |
| ARDA | American Rescue Dog Association |
| ARDA | Advanced Research and Development Agency |
| ARDA | African Radio Drama Association (Nigeria) |
| ARDA | Agricultural and Rural Development Act (Canada) |
| ARDA | Association Réunionnaise de Développement de l'Aquaculture (French: Reunion Association of Aquaculture Development; Reunion, France) |
| ARDA | A Realization of Distributed Analysis (project; Large Hadron Collider) |
| ARDA | Atomic Research and Development Authority |
| ARDA | Airborne Radar Directed Approach |
| ARDA | Agricultural and Rural Development Association (Sri Lanka) |
| ARDA | Active Retro-Directive Array |
| ARDA | Adaptive Rate Decision Algorithm (Sprint) |