| Abbreviation | Definition |
|---|---|
| AFT | ABC FlowCharter Template |
| AFT | Template (ABC FlowCharter 3.0) |
| AFW | ABC FlowCharter Workspace |
| AFW | Workspace (ABC FlowCharter 3.0) |
| AGN | Agenda (Psion Series 3) |
| AGN | Psion Series 3 Agenda file |
| AI | Vector graphics (Adobe Illustrator) |
| AIA | Adobe Illustrator Action File |
| AIF | ADW Knowledge Ware setup Information File |
| AIF | Application Information File |
| AIF | Arm Image Format |
| AIF | Audio Interchange File |
| AIF | Audio Interchange Format File sound |
| AIFC | AIFF-C sound (Apple Audio Interchange Format File with Compression) |
| AIFF | Apple Audio Interchange Format File sound file |
| AIJ | After Image Journal file |
| AIM | Asm Text Mode Image File (The Ultimate Draw) |
| AIM | Netscape AOL Instant Message launch file |
| AIM | The Ultimate Draw Assembly Text Mode Image File |
| AIM | The Ultimate Draw Assembly Text Mode Image File |