| SUI | Semantic User Interface 
| Others |
| SUI | Serious Untoward Incident
| Others |
| SUI | serious untoward incident (serious incident requiring investigation)
| Others |
| SUI | Service User Involvement
| Others |
| SUI | Setup User Interface
| Others |
| SUI | Shopping Under the Influence
| Others |
| SUI | Simple User Interface
| Others |
| SUI | Simple User Interface Toolkit library
| Others |
| SUI | Singer Under The Influence
| Others |
| SUI | Society of United Irishmen
| Others |
| SUI | Solutions Unlimited Inc
| Others |
| SUI | Some Useful Information
| Others |
| SUI | Spatial User Interaction
| Others |
| SUI | Special User Interface
| Others |
| SUI | Specific Uptake Inhibitor
| Others |
| SUI | Speech User Interface
| Others |
| SUI | Stacked User Inputs
| Others |
| SUI | Standard User Interface
| Others |
| SUI | State Unemployment Insurance
| Others |
| SUI | State University of Iowa
| Others |
| SUI | Stress Urinary Incontinence
| Others |
| SUI | String Unique Identifier
| Others |
| SUI | Subsurface Utility Investigations
| Others |
| SUI | suicide
| Others |
| SUI | Sukhumi, Russia
| Others |
| SUI | Sunsun/Fairfeild Train Station in California
| Others |
| SUI | Supermedia User Interface
| Others |
| SUI | System Unique Identifier
| Others |
| SUI | Systems Unlimited Inc
| Others |