| Acronym | Definition |
|---|
| AIL | Acceptance in Lieu (taxes; UK) |
| AIL | Adventures in Life (mission organization) |
| AIL | Aileron (aviation) |
| AIL | American Income Life (insurance company) |
| AIL | Associação Internacional de Lusitanistas (Portuguese: International Lusitania Association) |
| AIL | Associazione Italiana Contro Le Leucemie, Linfomi E Mieloma |
| AIL | Apar Industries Ltd. (India) |
| AIL | Audio Interface Library |
| AIL | Audio Input Left |
| AIL | Afghan Institute of Learning |
| AIL | Accademia Italiana Di Lingua (Italian international association of schools) |
| AIL | All-Ireland League |
| AIL | Advanced Imaging Laboratory |
| AIL | Adventures in Learning (Oregon State University) |
| AIL | Artificial Intelligence Laboratory |
| AIL | Artists in Labs (Zurich, Switzerland) |
| AIL | Accidentally in Love (song title) |
| AIL | Aziende Industriali di Lugano SA |
| AIL | Advanced Intercross Lines |
| AIL | Achievement Institute of Language |
| AIL | Airborne Instruments Laboratory |
| AIL | Approved Issuer Levy (New Zealand) |
| AIL | Arab International Logistics |
| AIL | Atlantic Industries Ltd |
| AIL | Action Item List |
| AIL | Avionics Integration Laboratory |
| AIL | Amateur Inline League (inline skating) |
| AIL | Aggressive In-Line (sport) |
| AIL | Anti Imperialist League |
| AIL | Advanced Imagery Library |
| AIL | Ancarim Iron Legion (Star Wars group) |
| AIL | Association Isépienne du Libre (French student association) |
| AIL | Audco India Ltd |
| AIL | Average Item Level (World of Warcraft) |
| AIL | Animation International Ltd |
| AIL | Anti-Internment League (Northern Ireland) |
| AIL | Aids to Independent Living (Canadian Red Cross) |
| AIL | Ailigandi Airport (Panama) |
| AIL | Agent Infrastructure Layer |
| AIL | Application Interface Layer |
| AIL | Antarctic Infrastructure and Logistics (NSF Office of Polar Programs) |
| AIL | Associate of the Institute of Linguists |
| AIL | Ambient Intelligence Lab |
| AIL | Atelier d'Ingénierie de La Louvière (Belgium) |
| AIL | Advanced Innovations Ltd |
| AIL | ARTS Integration Laboratory |
| AIL | Asset Interchange Language |
| AIL | Advance Information Letter |
| AIL | Automated Integrated Language |
| AIL | Assign Interswitch Link |
| AIL | Automotive Industries Limited |
| AIL | ACES International Ltd |
| AIL | Arterial ICC (Interstitial Cells of Cajal)-Like |
| AIL | Availability/Improvement List (commercial aviation) |
| AIL | Agencia Informativa Latinoamericana |
| AIL | Answerthink India Limited |