SP

SP may stand for:

• São Paulo (city)
• São Paulo (state)
• Sapeur-pompier (French firefighter)
• Saskpower (Canada)
• secondary power
• service pack
• Shore patrol (US Navy)
• short perforation (philately)
• signal processor
• Silver piece (role-playing games)
• Sleep Paralysis
• South Park
• Southern Pacific Railroad (AAR reporting mark SP)
• South Pole
• stack pointer (computers)
• standard play
• starting price bookmaking (known colloquially as SP)
• state park (US)
• state police (US)
• symplectic group or the corresponding Lie algebra (mathematics).
• Suppressive Person – in the Church of Scientology, formally a condemned and shunned heretic or wrongdoer, loosely used to describe a source of trouble
• Game Boy Advance SP
• Political parties:
  • Socialist Party or Social Democratic Party
  • Samajwadi Party (India)
  • Samata Party (India)
  • Saskatchewan Party
  • Schleswigsche Partei
• Short Play, a vinyl record (or single) format
• Short Play (VCR format)
• Starting Prices (UK) a betting term

SP is also a chat term for Spelling. E.g. "That folder is labeled *miscellaneeoeus. *sp"