| Abbreviation | Definition |
|---|---|
| ARLTR | All Roads Lead To Rome |
| ARLTR | Ana Rita Lado Teixeira Ribeiro |
| ARM | Acorn Risc Machine |
| ARM | Acorn RISC Machines |
| ARM | Adaptive Reasoning Model |
| ARM | Advanced Recording Model |
| ARM | Alabama Rural Ministry |
| ARM | Alliance for Regenerative Medicine |
| ARM | Americas Regional Members |
| ARM | Ancient Relic Machine |
| ARM | Ancient Relic Machines |
| ARM | anonymizing relay monitor |
| ARM | Anti Radiation Missile |
| ARM | Aquatic Revenge Machine |
| ARM | Archive Rescue Mission |
| ARM | Area Relief Ministries |
| ARM | Arthritis Rheumatism Muscle |
| ARM | Association of Rotational Molders |
| ARM | Association Recovering Motorcyclists |
| ARM | Assorted Raw Materials |