| SOI | IEEE International Silicon-On-Insulator Conference 
| Others |
| SOI | Italian Horticultural Society
| Others |
| SOI | Italian Ophthalmological Society
| Others |
| SOI | Sand and Oil Interceptor
| Others |
| SOI | Saturn Orbit Insertion
| Others |
| SOI | Schedule Of Investment
| Others |
| SOI | Schmidt Ocean Institute
| Others |
| SOI | School of Infantry
| Others |
| SOI | Science Olympiad, Inc.
| Others |
| SOI | Scientific Object Identifier
| Others |
| SOI | Selecting Organizing And Integrating
| Others |
| SOI | Service Oriented Infrastructure
| Others |
| SOI | Service Oriented Integration
| Others |
| SOI | Severity Of Illness
| Others |
| SOI | Signal Of Interest
| Others |
| SOI | Signal Operating Instructions
| Others |
| SOI | Signal Operation Instructions
| Others |
| SOI | Signal Operations Instructions
| Others |
| SOI | Silicon On Insulator
| Others |
| SOI | Simultaneous Orbit Iteration
| Others |
| SOI | Single Opt In
| Others |
| SOI | Small Outline i-Leaded Package
| Others |
| SOI | Small Overlap Impact
| Others |
| SOI | Solar Oscillations Investigation
| Others |
| SOI | Solaris Oilfield Infrastructure
| Others |
| SOI | Sound of Ideas
| Others |
| SOI | South Molle Island, Queensland, Australia
| Others |
| SOI | Southern Oscillation Index
| Others |
| SOI | Space Object Identification
| Others |
| SOI | Sphere Of Influence
| Others |
| SOI | Spheres Of Influence
| Others |
| SOI | Sports Outreach Institute
| Others |
| SOI | Sql Object Interface
| Others |
| SOI | Standard Operator Interface
| Others |
| SOI | Star Of India
| Others |
| SOI | Stars On Ice
| Others |
| SOI | Start Of Image
| Others |
| SOI | Start of Injection
| Others |
| SOI | State Of Israel
| Others |
| SOI | State Of the Industry
| Others |
| SOI | Statement of Intent
| Others |
| SOI | Statement of Interest
| Others |
| SOI | Statistics Of Income
| Others |
| SOI | Structure Of Intellect
| Others |
| SOI | Structure Of the Intellect
| Others |
| SOI | Student Organizations Institute
| Others |
| SOI | Student Outreach Intern
| Others |
| SOI | Style of Influence
| Others |
| SOI | Summer of Innovation
| Others |
| SOI | Supplier Owned Inventory
| Others |
| SOI | Swiss Olympiad in Informatics
| Others |
| SOI | Syllabus Of Instruction
| Others |
| SOI | System On Insulator
| Others |