1A
1A stands for:
- Colloquially for something of the highest quality, see quality class
- Amadeus (CRS) according to IATA airline code
- Astra 1A , a television satellite from SES Global
- Chevrolet 1A , a car model
- IA television , a private Berlin TV broadcaster
- Meltwater pulse 1A , a time of rapid glaciation at the end of the last ice age
1a stands for:
- Bundesstrasse 1a , a German federal highway in North Rhine-Westphalia
- OsxTrojan / 1a , the first malware for Apple's Mac OS X operating system
Ia stands for the following military functions:
See also:
