ARC
- ARC (former
name of Hanson Quarry Products Europe)
- Accident Reconstruction Resource
- Advanced RISC Computing
- Advocacy for Respect for Cyclists
- Aging Research Centre
- Agricultural Research Council
-
Airlines Reporting Corporation
- Alberta Research Council
- American
Reprographics Company
- Ames
Research Center
- Applied Research Center
- Arthritis Research
Campaign
- L'Association pour la Recherche Cognitive
-
L'Association pour la Recherche sur le Cancer
- Auckland Regional
Council
- Australian Research Council
