ARA
(1) Abfallrechtsausschuss der LAGA, (2) Abwasserreinigungsanlage
ARA
Antiruckelaufschaltung
ARA
Automotive Recyclers Association
ARAP
Apple Remote Access Protocol
CARA
Computer Aided Radio Amateur
A/UX
Apple / Universal eXecutor
AAA
Access Authentication Authorisation
AAC
Apple Assistance Center