| Acronym | Definition |
|---|
| AAL | American Airlines |
| AAL | Ambient Assisted Living (Europe) |
| AAL | ATM Adaptation Layer |
| AAL | Alaska Airlines |
| aal | attorney at law |
| AAL | Aid Association for Lutherans |
| AAL | Animals as Leaders (band) |
| AAL | Anterior Axillary Line |
| AAL | Above Aerodrome Level |
| AAL | Asynchronous Transfer Mode Adaption Layer |
| AAL | Australian Air League |
| AAL | Aalborg, Denmark - Aalborg (Airport Code) |
| AAL | Alloy Annotation Language |
| AAL | Acceptable Ambient Level |
| AAL | Anatomical Automatic Labeling (digital human brain atlas) |
| AAL | Aero Acoustic Levitation |
| AAL | Association des Artistes Lorrains (French: Lorraine Artists' Association) |
| AAL | Ames Aeronautical Laboratory |
| AAL | Applied Action Level (environment) |
| AAL | Acceptable Ambient Limit |
| AAL | Additional Authorizations List |
| AAL | Account Access Layer |
| AAL | Analog PSTN Access Line |
| AAL | Application Adaption Layer |
| AAL | Aircraft Approach Limitation |
| AAL | Active Alarm List |
| AAL | Academy of Asian Leaders |
| AAL | Arctic Aeromedical Lab (Fort Wainwright, AK) |
| AAL | Assembly on American Literature |
| AAL | Authorized Allowance List |
| AAL | Asociacion Ambientalista Llastay |
| AAL | Ateliers d'Art Liturgique (French: Liturgical Art Workshops) |
| AAL | Association des Attachés Linguistiques (French: Association of Language Staff) |
| AAL | Aircraft Assignment Letter |
| AAL | Asiana Air Lines |
| AAL | Arthur Alexander Leach (junior high school, Winnipeg, Canada) |
| AAL | Address Alignment Logic (computer science) |
| AAL | Atelier d'Astronomie de Limoges (Astronomical Workshop of Limoges- France) |
| AAL | Agence Alsace Lorraine (French real estate agency) |
| AAL | Advanced Academic Literacy |
| AAL | Australasian Association for Logic (Australia and New Zealand) |
| AAL | Add-A-Leaf (automotive modification) |
| AAL | Ankara Ataturk Lisesi (Turkish high school) |
| AAL | Additional Adoption Leave (UK) |