| OAI | OAI: Office Action Indicated 
| Others |
| OAI | Oceanographic Area of Interest
| Others |
| OAI | Octane Adjust Input
| Others |
| OAI | Office of Academic Innovation
| Others |
| OAI | Official Action Indicated
| Others |
| OAI | Ohio Aerospace Institute
| Others |
| OAI | Ok As Is
| Others |
| OAI | Omni Air International
| Others |
| OAI | Open Access Initiative
| Others |
| OAI | Open Access Initiatives
| Others |
| OAI | Open Action Item
| Others |
| OAI | Open Air Interface
| Others |
| OAI | Open Api Initiative
| Others |
| OAI | Open Application Interface
| Others |
| OAI | Open Archive Initiative
| Others |
| OAI | Open Archives Initiative
| Others |
| OAI | Optical Associates Incorporated
| Others |
| OAI | Optimization Associates Inc
| Others |
| OAI | Oracle Academic Initiative
| Others |
| OAI | Order of Architects and Consulting Engineers (Luxembourg)
| Others |
| OAI | Ordo Algolis Interstellaris
| Others |
| OAI | Organization of Istanbul Armenians
| Others |
| OAI | Organizational Activity Interface
| Others |
| OAI | Origin Access Identity
| Internet, Technology, Cloud Computing, AWS |
| OAI | Orr Associates Inc
| Others |
| OAI | Outdoor Access Initiative
| Others |
| OAI | Outside Access In
| Others |
| OAI | Outside Air Induction
| Others |