| Acronym | Definition |
|---|
| AOI | Area Of Interest |
| AOI | Automated Optical Inspection |
| AOI | Art of Illusion (3D modeling software) |
| AOI | Associated Oregon Industries |
| AOI | Angle Of Incidence |
| AOI | Age of Innocence (David Hamilton book, also a band) |
| AOI | Articles of Incorporation |
| AOI | Age of Innocence (game) |
| AOI | Africa Orientale Italiana |
| AOI | Auto-Owners Insurance |
| AOI | Association de l'Ostéogenèse Imparfaite |
| AOI | Aide Odontologique Internationale |
| AOI | Arab Organization for Industrialization (Egyptian government industrial organization) |
| AOI | All Ordinaries Index (stock index, Australian Stock Exchange) |
| AOI | Active Output Interface (UNI PMD specs for copper/fiber) |
| AOI | Ancona, Italy - Falconara (Airport Code) |
| AOI | Adjusted Operating Income |
| AOI | Apnea of Infancy |
| AOI | Automated Operator Interface |
| AOI | Areas Of Improvement |
| AOI | Accent On Information (on assistive technology products and devices) |
| AOI | Atelosteogenesis, Type I |
| AOI | Associate Office Infrastructure (USPS) |
| AOI | Abnormal Operating Instruction |
| AOI | Advanced Open Integration (software development) |
| AOI | Advance Ordering Information |
| AOI | Aero-Optics Inc. (Rolling Hills Estates, CA) |
| AOI | Accept Operator Input |
| AOI | Access Option Indicator (Sprint) |
| AOI | Avalon Online Initiative (web development firm) |
| AOI | AND-OR-Invert(er) (logical; electrical engineering) |
| AOI | Automatic Object Inspection |
| AOI | Artist of Illusion |
| AOI | All Out Insane (gaming clan) |