ACAS
Appearance
ACAS may refer to:
In aviation:
- Airborne Collision Avoidance System, an International Civil Aviation Organization standard
- Assistant Chief of the Air Staff, a senior appointment in the Royal Air Force
In other fields:
- Aboriginal Children's Advancement Society, an organization in New South Wales
- Acas (Advisory, Conciliation and Arbitration Service), an independent non-departmental public body of the Government of the United Kingdom
- Associate in the Casualty Actuarial Society, a level of membership in th Casualty Actuarial Society