Abbreviations beginning with a

ARPANAdvancement of Rural People And Nature
Miscellaneous » Unclassified

ARPANAseed Rural Producers Association Network
Miscellaneous » Unclassified

ARPANAfrican Rural Policy Analysis Network
Regional » African

ARPANETAdvanced Research Projects Agency Network early internet
Academic & Science » Research

ARPANETAdvanced Research Projects Agency Network
Computing » General

ARPANETAdvanced Research Projects Agency Network
Computing » IT

ARPANETAdvanced Research Projects Agency NETwork
Governmental » Military

ARPANETAdvanced Research Projects Agency Network early internet
Internet

ARPANSAAustralian Radiation Protection and Nuclear Safety Agency
Academic & Science

ARPAPAsociatia Romana a Pensiilor Administrate Privat (Romanian Association of Private Pension Funds Administrators)
Academic & Science

ARPAPAluminium-Resin-Polythene-Aluminium-Polythene (ITU-T)
Community

ARPASAir Reserve Pay & Allowance System
Governmental

ARPASAsociación de Radios Participativas
International » Spanish

ARPASAmerican Registry of Professional Animal Scientists
Medical » Veterinary

ARPASTArkansas Paranormal and Anomalous Studies Team
Miscellaneous

ARPATAssociazione Regionale Produttori Apistici Toscani (Italian: Toscani Regional Bee Producers Association)
Academic & Science

ARPBAdvance Research in Pharmaceuticals and Biological
Academic & Science » Research

ARPBAdvance Research in Pharmaceuticals and Biologicals
Academic & Science » Research

ARPBAssociated Real Property Brokers, Inc.
Business » Companies & Firms

ARPBAssociated Real Property Brokers, Incorporated
Business » Companies & Firms