SPI

SPI may refer to:

Technology

• System Packet Interface, family of interfaces from the Optical Internetworking Forum
  • SPI-3, a system packet interface designed to be used in systems that support OC-48 SONET interfaces
  • SPI-4.2, a system packet interface designed to be used in systems that support OC-192 SONET interfaces
• SCSI Parallel Interface, in physical data transfer, a parallel electrical bus interface
• Security Parameter Index, in computer networking, an identification tag added to the header
• Serial Peripheral Interface Bus, a synchronous serial data link standard that operates in full duplex mode
• Service Package Interpreter, a software module that handles incoming tasks from internet programs
• Service Provider Interface, a software mechanism to support replaceable components
• Single Point Injection, where one fuel injector is used in multi-cylinder petrol engines
• Software Process Improvement, an initiative of the Data & Analysis Center for Software
• Stateful Packet Inspection, the process used by a firewall to keep track of the state of network connections
• Satisfactory Performance Increase, a pay raise for employees whose Personnel Performance Reviews are satisfactory

Organizations

• St. Paul's Institution, Seremban, secondary school in Malaysia
• Sisters of Perpetual Indulgence, international LGBT non-profit group
• Society for Philosophical Inquiry, a non-profit organization promoting discussion of philosophy
• Society of the Plastics Industry, a U.S. trade association
• Software Patent Institute, an American non-profit assisting in the correct assignment of software patents
• Software in the Public Interest, a non-profit organization promoting free and open-source software
• Sveriges Pensionärers Intresseparti, or Swedish Senior Citizen Interest Party, a political party in Sweden
• St. Pascual Institution, former name of Colegio de San Pascual Baylon, a school in Obando, Bulacan, Philippines

Companies

• SPi Technologies, a business outsourcing provider founded in the Philippines
• Simulations Publications, Inc., an American publisher of board wargames
• Software Paradigms International, a Consulting and Systems Integration Company Incorporated in Atlanta, USA
• Sony Pictures Imageworks, a visual effects and animation company
• Soyuzplodimport, or SPI Group, a Russian vodka company
• Shotmed Paper Industries (spi), an Egyptian paper manufacturer

Finance

• SPI 200 futures contract, the benchmark equity index futures contract in Australia
• Swiss Performance Index, most closely-followed stock index in Switzerland

Other uses

• Abraham Lincoln Capital Airport, Springfield, Illinois, IATA code SPI
• Spi-calculus, a proposed extension of the Pi-calculus
• Semi-Powered Infiltration Armor in the Halo universe
• St Pancras International

See also

• SPL (disambiguation)

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