A
- AJ – PowerBook Duo 2300c/100
- Aladdin – Macintosh SE simulation
- Aladdin – Macintosh SE FDHD
- Aladdin – Macintosh Quadra 605
- Allegro – Mac OS 8.5
- Amazon – Macintosh Quadra 950
- Ansel – PowerBook Duo 250
- Antares – System Software 6
- Apollo – Macintosh Classic II
- Artemis – Power Mac G3 All-in-One
- Asahi – PowerBook 100
- Atlanta – Mac OS X 10.4.1
- Atlantic – Macintosh IIcx
- Aurora – Macintosh IIcx
- Aurora II – Macintosh IIci
- Autobahn – Power Macintosh 9500
Read more about this topic: List Of Apple Codenames