AS4
AS 4 stands for:
- Applicability Statement 4 , a communication protocol, see AS4 (interface)
- Airspeed AS 4 , a three-engine double-decker from British production
AS-4 stands for:
- Raduga Ch-22 , an airborne long-range anti-ship guided missile made in Russia (Nato: AS-4 Kitchen)
- AS-4 plug , a four-pole plug for stationary connection of telephones , see junction box