| Abbreviation | Definition |
|---|---|
| ARP | Applied Research Project |
| ARP | Associate in Research and Planning |
| ARP | Association for Research in Personality |
| ARP | Autism Research Program |
| ARPAN | Advanced Research Projects Agency Network |
| ARPANET | Advanced Research Projects Agency Network early internet |
| ARPB | Advance Research in Pharmaceuticals and Biological |
| ARPB | Advance Research in Pharmaceuticals and Biologicals |
| ARPC | Analysis Research and Planning Corporation |
| ARPC | Antiracist Research and Policy Center |
| ARPN | Asian Research Publishing Network |
| ARPP | Advancing Research in Pediatric Pain |
| ARPP | Animal Research Protection Program |
| ARRB | Australian Road Research Board |
| ARRC | Acupuncture Research Resource Centre |
| ARRC | Addiction Recovery Research Center |
| ARRC | Advanced Radar Research Center |
| ARRC | Alcuin Research Resource Centre |
| ARRD | Australian Railways Research and Development |
| ARRG | Association into Research of Restricted Growth |