| SCI | Colombian Society of Engineers 
| Others |
| SCI | Real-time Science Data Format
| Others |
| SCI | Saab Club Italia
| Others |
| SCI | Safari Club Int
| Others |
| SCI | Safari Club International
| Others |
| SCI | Safer Communities Initiative
| Others |
| SCI | Sagar Computer Institute, India
| Others |
| SCI | Sales Conversion Interface
| Others |
| SCI | San Cristobal, Venezuela
| Others |
| SCI | Satria Club Indonesia
| Others |
| SCI | Save the Children International
| Others |
| SCI | Scalable Coherent Interconnect
| Others |
| SCI | Scalable Coherent Interface
| Others |
| SCI | Schilling Consulting, Inc.
| Others |
| SCI | Schistosomiasis Control Initiative
| Others |
| SCI | Science Citation Index
| Others |
| SCI | Science of Creative Intelligence
| Others |
| SCI | Scientific
| Others |
| SCI | Scientific Computing and Imaging
| Others |
| SCI | Scientific Computing International
| Others |
| SCI | SciFax Fax file
| Others |
| SCI | Scitex Continuous Tone CT2T image file
| Others |
| SCI | Scripta Classica Israelica
| Others |
| SCI | Secret Covert Investigation
| Others |
| SCI | Secure Client Interface
| Others |
| SCI | Security Customer Index
| Others |
| SCI | Sensitive Compartmentalized Information
| Others |
| SCI | Sensitive Compartmented Information
| Others |
| SCI | Serial Communications Interface
| Others |
| SCI | Servant Communities International
| Others |
| SCI | Service Civil International
| Others |
| SCI | Service Corporation International
| Others |
| SCI | Shared Contemplative Insight
| Others |
| SCI | Shopping Cart Interface
| Others |
| SCI | Short Circuit Interruption
| Others |
| SCI | Sierra Character Interpreter
| Others |
| SCI | Sierra Creative Interpreter
| Others |
| SCI | Sierra's Creative Interpreter
| Others |
| SCI | Signal Content Index
| Others |
| SCI | Silver Car Indonesia
| Others |
| SCI | Single Character Introducer
| Others |
| SCI | Skipper Consulting, Inc.
| Others |
| SCI | Sky Cross, Incorporated
| Others |
| SCI | Slot Car Illustrated
| Others |
| SCI | Slot Cycle Index
| Others |
| SCI | Small Clojure Interpreter
| Others |
| SCI | Small Computer Interface
| Others |
| SCI | Smart Charge Injection
| Others |
| SCI | Smart Choice Investments
| Others |
| SCI | Soc.Culture.Iranian
| Others |
| SCI | Social Cohesion and Identity
| Others |
| SCI | Sociedad Colombiana de Ingenieros
| Others |
| SCI | Society of Chemical Industry
| Others |
| SCI | Society of Composers Inc
| Others |
| SCI | Society of Composers Incorporated
| Others |
| SCI | Society of Composers, Inc.
| Others |
| SCI | Society of Industrial Chemistry
| Others |
| SCI | Solar Cookers International
| Others |
| SCI | Solve Collaborate Investigate
| Others |
| SCI | Some Clever Insight
| Others |
| SCI | Sophisticated Creative And Intelligent
| Others |
| SCI | Southern California Illumination
| Others |
| SCI | Southern Careers Institute
| Others |
| SCI | Spark Common Rail Injection
| Others |
| SCI | Special Circumstance Instructions
| Others |
| SCI | Special Commissioner of
| Others |
| SCI | Special Commissioner of Investigation
| Others |
| SCI | Special Compartmentalized Information
| Others |
| SCI | Special Compartmented Information
| Others |
| SCI | Special Crash Investigation
| Others |
| SCI | Special Crash Investigations
| Others |
| SCI | Spinal Cord Injuries
| Others |
| SCI | Spinal Cord Injury
| Others |
| SCI | Sports Car Illustrated
| Others |
| SCI | Sports Car International
| Others |
| SCI | Springfield College in Illinois
| Others |
| SCI | Standardized Climate Indices
| Others |
| SCI | State Correctional Institute
| Others |
| SCI | State Correctional Institution
| Others |
| SCI | Steel Construction Institute
| Others |
| SCI | Strategic Comic Initiative
| Others |
| SCI | Stream Club Indonesia
| Others |
| SCI | String Cheese Incident
| Others |
| SCI | Strong City International
| Others |
| SCI | Subaru Canada Inc.
| Others |
| SCI | Subaru Club Indonesia
| Others |
| SCI | Subaru Community Indonesia
| Others |
| SCI | Superconductive Components Inc
| Others |
| SCI | Surface Charge Image
| Others |
| SCI | Surface Charge Imaging
| Others |
| SCI | Swift Club Indonesia
| Others |
| SCI | Switch Closure In
| Others |
| SCI | System Configuration Information
| Others |
| SCI | System Control Interrupt
| Others |
| SCI | Systems Compliance and Integrity
| Others |