Abbreviations beginning with a

ARRGAMLC Registration and Reporting Guidelines
Miscellaneous » Unclassified

ARRGAnimal Rights and Rescue Group
Miscellaneous » Animals

ARRGAnimal Rights and Rescue Group (Lismore, New South Wales, Australia)
Miscellaneous

ARRGArch Rival Roller Girls (Saint Louis, MO)
Miscellaneous

ARRHOAssociation des Rallyes Rhodaniens
Miscellaneous » Automotive

ARRIAnimal Reproduction Research Institute
Academic & Science

ARRIAquatic Restoration and Research Institute
Academic & Science » Research

ARRIAutism Research Review International
Academic & Science

ARRIArnold & Richter (motion picture camera equipment manufacturer)
Business

ARRIArrival At Destination (rail car event movement code)
Business

ARRIAppalachian Regional Reforestation Initiative
Community » Forestry

ARRIAquatic Restoration and Research Institute
Governmental » Institutes

ARRIAutomation Robotics Research Institute
Governmental » Institutes

ARRIAlbironi Reconstruction & Rehabilitation Institute
Miscellaneous

ARRIAutomation & Robotics Research Institute
Miscellaneous

ARRIAutomation Robotics Research Institute
Miscellaneous » Unclassified