| Acronym | Meaning |
| AIL | Acceptance in Lieu (taxes; UK) |
| AIL | Aileron (aviation) |
| AIL | Airborne Instruments Laboratory |
| AIL | Antarctic Infrastructure and Logistics (NSF Office of Polar Programs) |
| AIL | Approved Issuer Levy (New Zealand) |
| AIL | ARTS Integration Laboratory |
| AIL | Asset Interchange Language |
| AIL | Automotive Industries Limited |
| AIL | Avionics Integration Laboratory |