| Acronym | Definition |
|---|
| ARP | Address Resolution Protocol |
| ARP | Alcohol Recovery Project (London, UK) |
| ARP | Addiction Recovery Program (various locations) |
| ARP | ATV (Automated Transfer Vehicle) Rendezvous Pre-development |
| ARP | Antenna Reference Point (global positioning system) |
| ARP | Air Raid Precautions |
| ARP | Advanced Research Projects (various meanings) |
| ARP | Advance Reservation Period (railways; India) |
| ARP | Arpeggiator |
| ARP | Action Research Project (various locations) |
| ARP | Arapahoe (SIL code) |
| ARP | Attica Raceway Park (Ohio) |
| ARP | Accidental Release Prevention |
| ARP | Automotive Racing Products |
| ARP | Acid Rain Program (US EPA) |
| ARP | Adaptive Routing Protocol |
| ARP | Active Rollover Protection |
| ARP | anti Relay Protection |
| ARP | Adaptive Resource Provider |
| ARP | Aerospace Recommended Practice |
| ARP | Alternative Retirement Plan |
| ARP | American Registry of Pathology |
| ARP | Automatic Renewal Program (various organizations) |
| ARP | Angle-Resolved Photoemission |
| ARP | Association for Research in Personality |
| ARP | Angry Red Planet (online science fiction mystery) |
| ARP | Anti Revolutionaire Partij (Netherlands) |
| ARP | Association of Retired Persons (UK) |
| ARP | Aluminum Racing Products |
| ARP | Auteurs, Réalisateurs, Producteurs (French: Authors, Directors, Producers) |
| ARP | American Reform Party |
| ARP | Acreage Reduction Program |
| ARP | All-Requirements Project |
| ARP | Artist Residency Program |
| ARP | Adjustable-Rate Preferred Stock |
| ARP | Antiretroviral Therapy |
| ARP | Access Responsible Party (energy industry) |
| ARP | Aseguradora de Riesgos Profesionales (Spanish: Professional Risk Insurance) |
| ARP | Airport Reference Point |
| ARP | Attribute Release Policy (various schools) |
| ARP | Area Redevelopment Plan |
| ARP | Accelerated Reader Program (education) |
| ARP | Acquisition Review Process (various US federal agencies) |
| ARP | Air Refueling Point (US DoD) |
| ARP | Auction Rate Preferred (stocks) |
| ARP | Another RDF Parser |
| ARP | Asynchronous Request Processing (computing) |
| ARP | Agent de Recherches Privées (French: Private Investigator) |
| ARP | Agricultural Rehabilitation Project (various organizations) |
| ARP | Advanced Reporting Package (Vitel) |
| ARP | Association de Recherche sur la Polyarthrite |
| ARP | Autoradiopuhelin (Finnish: Car Radio Phone) |
| ARP | Adrian's Rojak Pot (Malaysian technology news website) |
| ARP | Average Retail Price |
| ARP | Annual Report on Privatization (Canada) |
| ARP | Absolute Refractory Period |
| ARP | Art of Record Production (Conference) |
| ARP | Accounts Receivable Purchase |
| ARP | American Research Products, Inc. |
| ARP | Allegheny Riverfront Park (Pittsburgh, PA) |
| ARP | Accidental Release Program |
| ARP | American Recording Productions |
| ARP | Ammunition Refilling Point |
| ARP | Aménagement des Routes Principales (French: Arrangement of Main Roads) |
| ARP | Alliance for Retirement Prosperity |
| ARP | Australian Reform Party |
| ARP | Accidental Risk Prevention (California Goveror's Office of Emergency Services) |
| ARP | Affected Relative Pair |
| ARP | Active Reservation Protocol |
| ARP | Animal Resource Program |
| ARP | Airborne Reconnaissance Platform |
| ARP | Antenna Radiation Pattern |
| ARP | Accreditation Review Panel |
| ARP | Associated Reformed Presbyterian Church |
| ARP | Apprentissage par Résolution de Problèmes |
| ARP | Auxiliary Register Pointer |
| ARP | Assisted Rental Program |
| ARP | Autonomous Reuse Partitioning |
| ARP | Alan R. Perlman (founder of ARP Instruments) |
| ARP | Account Reconciliation Plan |
| ARP | Ancillary Radiometric Product |
| ARP | Anti-Radiation Projectile |
| ARP | Asset Recovery Program |
| ARP | Action Replay Pro |
| ARP | Ambulance Radio Programme (UK) |
| ARP | Acquisition Requirements Package |
| ARP | Algorithm Research Panel |
| ARP | Alternate Release Procedures |
| ARP | Association for Rational Psychology |
| ARP | Austrian Railway Pictureteam |
| ARP | Army Radiation Permit |
| ARP | Automatic Rapid Processing (algorithm for generating cross-section libraries to use with ORIGEN-S) |
| ARP | Associate Reserve Planner |
| ARP | Almost Regular Permutation |
| ARP | Analisador de Redes de Petri (Portuguese: Petri Net Analyser) |
| ARP | Allocation and Retention Priority (3GPP policy) |
| ARP | Absorption Refrigeration Plant |
| ARP | Architecture Professional Studies |
| ARP | Alarm Response Procedure (various organizations) |
| ARP | Auto Rétro Passion (French automobile club; Mauges, France) |
| ARP | Automotive Repair Parts |
| ARP | Atlantic Regional Panel (JOIDES) |
| ARP | Age Replacement Policy |
| ARP | Absolute Return Pool (The Investment Fund for Foundations) |
| ARP | AIDS Response Program |
| ARP | Amphibious Reconnaissance Platoon (US Marine Corps) |
| ARP | Accountable Representation for the People (Australian Reform Party) |
| ARP | Anti-Revolutionnaire Partij |
| ARP | Analytical Rework Program |
| ARP | Assault Recovery Program |
| ARP | Authorized Resource Provider |
| ARP | Anciennes Roues Pontchâtelaines (French automobile club; Ponchâteau, France) |
| ARP | Autonomous Robotic Platform |
| ARP | AIMS Report Processing |
| ARP | Antenna Reference Pulse (radar) |
| ARP | Argentina (Old) Peso (national currency since 1970; replaced by Austral 1985) |
| ARP | Agricus Resource Program |
| ARP | Office of Advanced Reactor Programs |
| ARP | Aircrew Respiratory Protection |
| ARP | Army Research Plan |
| ARP | Antegrade Refractory Period |
| ARP | Atlantic Racquet Press |
| ARP | Art Research Program |
| ARP | Accelerated Requalification Program |
| ARP | Academic Resource Person |
| ARP | Autoroutes Routes Parkings (signal) |
| ARP | Asphalt Replacement Pellets |
| ARP | Actual Reduction to Practice |
| ARP | Automated Release Processing (NASA) |
| ARP | Automatic Reporting Post |
| ARP | Acronym Reduction Program |
| ARP | Alternate Resolution Plan (Sprint) |
| ARP | Automatic Result Processing |
| ARP | Annual Rate of Payment |
| ARP | Arsenic Research Partnership |
| ARP | Association Région Payerne |
| ARP | Airman Retraining Program |
| ARP | Ardsma Research and Publishing |
| ARP | Admodum Reverendi Patris (title accorded to certain clergy in the Roman Catholic Church) |
| ARP | Army Recreational Parks |
| ARP | Albanian Republican Party |
| ARP | Automated Report Processing (EPSIIA Corp.) |