A type of driver's license

An old explosives category for high explosives like dynamite

Class A drug, one with the highest criminal penalties in the UK

One of the lower levels of minor league baseball in the U.S.

A type of cigarette

Class A, the second book in the CHERUB series by Robert MUchamore.

Class A uniform, a type of military dress uniform

An airspace class as defined by the ICAO

Mercedes-Benz A-Class, a small familiy car by Mercedes-Benz

Class A war criminal - see war crime.

Class A stock

A type of broadcast station (see list of broadcast station classes)

A type of fire fighting foam

Classful network (or Class A network), a type of IP address

Class A office space

Class A television service

Class A surfaces in automotive design