| SPI | Capital Airport, Springfield, Illinois USA 
| Others |
| SPI | S Polynomial Information
| Others |
| SPI | SaaS PaaS and IaaS
| Others |
| SPI | Saas Paas Iaas
| Others |
| SPI | Safeguarding Proprietary Information
| Others |
| SPI | Safety Performance Indicator
| Others |
| SPI | Sales Per Item
| Others |
| SPI | Sales Performance International
| Others |
| SPI | Samaritan's Purse International
| Others |
| SPI | Samples Per Inch
| Others |
| SPI | Schaumburg Polk Inc
| Others |
| SPI | Schedule Performance Index
| Others |
| SPI | Scholastic Phonics Inventory
| Others |
| SPI | Scottsdale Prevention Institute
| Others |
| SPI | SCSI (Small Computer System Interface) Parallel Interface
| Others |
| SPI | Scsi Parallel Interface
| Others |
| SPI | SCSI-3 (Small Computer System Interface) Parallel Interface
| Others |
| SPI | Sector Partnerships Initiative
| Others |
| SPI | Sectoral Performance Indicators
| Others |
| SPI | Security Parameter Index
| Others |
| SPI | Security Parameters Index
| Others |
| SPI | Security Personnel Inc
| Others |
| SPI | Security Policy Index
| Others |
| SPI | Selected Period Investment
| Others |
| SPI | Self Paced Instruction
| Others |
| SPI | Self Publishing Insight
| Others |
| SPI | Self-Paced Instruction
| Others |
| SPI | Semantics, Proof, and Implementation
| Others |
| SPI | Senior Photographers International
| Others |
| SPI | Sensitive Personal Information
| Others |
| SPI | Sensor Point of Interest
| Others |
| SPI | Serial Parallel Interface
| Others |
| SPI | Serial Peripheral Interconnect
| Others |
| SPI | Serial Peripheral Interface
| Others |
| SPI | Service Performance Improvement
| Others |
| SPI | Service Performance Insight
| Others |
| SPI | Service Profile Identifier
| Others |
| SPI | Service Programming Interface
| Others |
| SPI | Service Provider Interface
| Others |
| SPI | Session Parameter Index
| Others |
| SPI | Sierra Pacific Industries
| Others |
| SPI | Silverstein Properties, Inc.
| Others |
| SPI | Simulations Publications Inc
| Others |
| SPI | Simulations Publications, Inc.
| Others |
| SPI | Singapore Paranormal Investigators
| Others |
| SPI | Single Point Imaging
| Others |
| SPI | Single Point Injection
| Others |
| SPI | Single Point Interchange
| Others |
| SPI | Single Process Initiative
| Others |
| SPI | Skim Pembiayaan Ikhtiar loan scheme
| Others |
| SPI | Slagging Pyrolysis Incinerator
| Others |
| SPI | Smart Passive Income
| Others |
| SPI | Smart Plant Instrumentation
| Others |
| SPI | Smart Plug-In
| Others |
| SPI | Smart Policing Initiative
| Others |
| SPI | Smartphone Integration
| Others |
| SPI | Soccer Power Index
| Others |
| SPI | Social Progress Imperative
| Others |
| SPI | Social Progress Index
| Others |
| SPI | Societ Psicoanalitica Italiana
| Others |
| SPI | Societe de Proteines Industielles
| Others |
| SPI | Society of the Plastics Industry
| Others |
| SPI | Software in the Public Interest
| Others |
| SPI | Software Patent Institute
| Others |
| SPI | Software Pirates Inc.
| Others |
| SPI | Software Process and Infrastructure
| Others |
| SPI | Software Process Impediment
| Others |
| SPI | Software Process Improvement
| Others |
| SPI | Solar Power Inc
| Others |
| SPI | Solar Power International
| Others |
| SPI | Solder Paste Inspection
| Others |
| SPI | Sonography Principles and Instrumentation
| Others |
| SPI | South Padre Island, Texas
| Others |
| SPI | Southern Police Institute
| Others |
| SPI | Sow Productivity Index
| Others |
| SPI | Soy Protein Isolate
| Others |
| SPI | Special Inspection
| Others |
| SPI | SPecial Investigative
| Others |
| SPI | Special Packaging Instruction
| Others |
| SPI | Special Private Intelligence
| Others |
| SPI | Special Projects International
| Others |
| SPI | Special Public Interest
| Others |
| SPI | Specialty Products Insulation
| Others |
| SPI | Split Port Induction
| Others |
| SPI | Split Port Injection
| Others |
| SPI | Springfield Illinois Airport. Springfield, Illinois. USA Abraham Lincoln Capital Airport.
| Others |
| SPI | Staal Private Investigation
| Others |
| SPI | Standard Performance Indicator
| Others |
| SPI | Standard Practice Instruction
| Others |
| SPI | Standardized Precipitation Index
| Others |
| SPI | Stanford Pascal Imaging
| Others |
| SPI | State Personal Income
| Others |
| SPI | Stateful Packet Inspection
| Others |
| SPI | Statefull Packet Inspection
| Others |
| SPI | Stitch Per Inch
| Others |
| SPI | Store Payment Interface
| Others |
| SPI | Stored Product Insects
| Others |
| SPI | Strategic Planning Initiative
| Others |
| SPI | Strategies for Policing Innovation
| Others |
| SPI | Strategy Planning and Implementation
| Others |
| SPI | Strategy Productivity Insight
| Others |
| SPI | Structure Probe, Inc.
| Others |
| SPI | Student Press Initiative
| Others |
| SPI | Sub Port Identifier
| Others |
| SPI | Subsequent Protocol Identifier
| Others |
| SPI | Summary of Proposed Investment
| Others |
| SPI | Summer Peacebuilding Institute
| Others |
| SPI | Superintendent of Public Instruction
| Others |
| SPI | Surface Position Indicator
| Others |
| SPI | Suse Plug-In
| Others |
| SPI | Sustainable Preservation Initiative
| Others |
| SPI | Suzuki Philippines Inc.
| Others |
| SPI | Swiss Performance Index
| Others |
| SPI | Swiss Precision Instruments
| Others |
| SPI | Synchronization Programming Interface
| Others |
| SPI | Synchronous Parallel Interface
| Others |
| SPI | Synchronous Peripheral Interface
| Others |
| SPI | Synthetic Personality Inventory
| Others |
| SPI | System Parameters Information
| Others |
| SPI | System Peripheral Interface
| Others |