| Acronym | Definition |
|---|
| OASIS | Organization for the Advancement of Structured Information Standards |
| OASIS | Outcome and Assessment Information Set (healthcare data) |
| OASIS | Open Access Same-time Information System (Extranet) |
| OASIS | Online Archival Search Information System (Harvard University) |
| OASIS | Organization for the Advancement of Structured Information Systems (formerly SGML Open) |
| OASIS | Operational Area Satellite Information System |
| OASIS | Organization for Advancement of Structured Information Standards |
| OASIS | Open Artwork System Interchange Standard |
| OASIS | Operational and Supportability Implementation System (FAA) |
| OASIS | Ontario Agencies Supporting Individuals with Special Needs (Canada) |
| OASIS | Oklahoma Areawide Services Information System |
| OASIS | Over-the-Horizon Airborne Sensor Information System |
| OASIS | Online Access Student Information System |
| OASIS | On-line Asperger Syndrome Information and Support |
| OASIS | Ontario Administration of Settlement and Integration Services |
| OASIS | On-Line Applicant Status and Information System |
| OASIS | Office for African American, Latino, and Asian American Student Services (New York University) |
| OASIS | On-Line Archive Science Information Services |
| OASIS | On-line Automotive Service Information System |
| OASIS | Ontario Association of Sewage Industry Services (Canada) |
| OASIS | Older Adult Service and Information Systems |
| OASIS | Open Access Same Time Information Service (EPRI) |
| OASIS | Operations and Science Instrument Support |
| OASIS | Ohio Association of Security & Investigation Services |
| OASIS | Advancing Open Standards for the Information Society |
| OASIS | Online Automated Supplier Information System |
| OASIS | OEX Autonomous Supporting Instrumentation System |
| OASIS | Oracle Application Software Implementation Strategy |
| OASIS | Office Automation Secure Information System |
| OASIS | Object-Oriented Administrative Systems-development in Incremental Steps |
| OASIS | Operations Analysis and Simulation Interface System |
| OASIS | Obstetric Anesthesia Safety Improvement Study |
| OASIS | Observation and Analysis of Smetic Islands in Space (NASA) |
| OASIS | OTH Airborne Sensor Information System |
| OASIS | Oceanographic and Atmospheric Support and Information System |
| OASIS | Online Administration School Information System |
| OASIS | Office Automation and Systems Improvement Standards (NASA) |
| OASIS | Observation At Several Interacting Scales |
| OASIS | Office Administrative Services & Integrated Systems, Incorporated |
| OASIS | Ocean All-Source Information System |
| OASIS | Office Of Administration System For Information Services |
| OASIS | Omni-Access System for Information Services (Lucent) |
| OASIS | Orbiter Avionics to Station Interface System |
| OASIS | Operational Application of Special Intelligence Systems |
| OASIS | Online Airport Spatial Information System |
| OASIS | Operate At Standard Idle Speeds |
| OASIS | Ordnance Alteration Status Information System |
| OASIS | Operability Assessment System for Integrated Simultaneous Engineering |
| OASIS | Optical Access SONET Interface System (Positron) |
| OASIS | Operation and Science Instrument Support |
| OASIS | Optimized Air-To-Surface Infrared Seeker |
| OASIS | Oceanic and Atmospheric Scientific Information Center |
| OASIS | Organic Airborne and Surface Mine Influence Sweep |
| OASIS | Operations Analysis Strategic Interactions Simulation (Model) |
| OASIS | Overseas Access Service for Information Systems |
| OASIS | Organizational and Strategic Intelligence System |
| OASIS | Observations of the American Society for Information Science |