| Abbreviation | Definition |
|---|---|
| ARAS | Adult Reading Assistance Scheme (New Zealand) |
| ARAS | Aged Rights Advocacy Service (Australia) |
| ARBC | American River Brewing Company |
| ARBED | Aciéries Réunies de Burbach-Eich-Dudelange |
| ARC | Acknex Resource Center |
| ARC | Agricultural Risk Consultants |
| ARC | Airlines Reporting Corporation |
| ARC | American Red Cross |
| ARC | American Roundball Corporation |
| ARCA | Appliance Recycling Centers of America, Inc. |
| ARCI | Accounts Receivable Collections Inc |
| ARCIL | Asset Reconstruction Company of India Ltd |
| ARCO | Atlantic Richfield Company One |
| ARCO | Atlantic Richfield Company the original |
| ARCT | Arcturus Therapeutics |
| ARCT | Arcturus Therapeutics Holdings Inc |
| ARDA | American Resort Development Association |
| ARDC | American Research and Development Corporation |
| ARDS | Afghanistan Reconstruction and Development Services |
| AREC | American Railway Express Company |