| Acronym | Definition |
|---|
| ARG | Argument |
| ARG | Argentina |
| ARG | Arginine |
| ARG | Argent |
| ARG | Argentines (FAO fish species code) |
| ARG | Aragonese (ISO 639 language code) |
| ARG | Art & Robotics Group |
| ARG | Argentia (US Navy operated island facility) |
| ARG | Argininemia |
| ARG | Automotive Replacement Glass |
| ARG | Attributed Relational Graph |
| ARG | Afghanistan Research Group |
| ARG | Internal Combustion Engine Repair Ship |
| ARG | Ancestral Recombination Graph (evolutionary science) |
| ARG | Anti-Replicator Gun (gaming; Stargate Atlantis) |
| ARG | Annuaire de Référencement Gratuit (French: Free Search Engine Optimization Directory) |
| ARG | American Resources Group, Ltd |
| ARG | Angle Recession Glaucoma |
| ARG | Application Resource Guide |
| ARG | Applied Resources Group (Brookline, Massachusetts) |
| ARG | Accident Review Group |
| ARG | Argentina Gold Peso (national currency since 1875; replaced by Peso Moneda 1899) |
| ARG | Aerial Refueling Group |
| ARG | Aviation Readiness Group |
| ARG | Annuaire du Roliste Grenoblois (French: Grenoble Roleplayer Directory; online role-playing) |
| ARG | amphibious ready group (US DoD) |
| ARG | Aerolineas Argentinas (ICAO code) |
| ARG | Alternate Reality Game (interactive narrative) |
| ARG | Alternate Reality Gaming |
| ARG | Academic Resource Guide (various schools) |
| ARG | Amateur Radio Group (various locations) |
| ARG | Air Refueling Group (US DoD) |
| ARG | Air Rescue Group |
| ARG | Annual Real Growth |
| ARG | Ada Rapporteur Group |
| ARG | Accident Response Group |
| ARG | Alcohol Research Group |
| ARG | Aquifer Remediation Goal |
| ARG | Amphibious Readiness Group |
| ARG | Ateliers de Réalisation Graphique (French: Graphic Design Workshop) |
| ARG | Anime Resource Group (Fanime) |
| ARG | Antigua Recreation Ground |
| ARG | America's Research Group |
| ARG | American Record Guide |