SP

SP may stand for:

• São Paulo
• Saskpower (Canada)
• secondary power
• service pack
• Shore patrol (US Navy)
• short perforation (philately)
• signal processor
• Silver piece (role-playing games)
• South Park
• Southern Pacific Railroad
• South Pole
• stack pointer (computers)
• state park (US)
• state police (US)
• Suppressive Person - in the Church of Scientology, formally a condemned and shunned heretic or wrongdoer, loosely used to describe a source of trouble
• Political parties:
  • Socialist Party or Social Democratic Party
  • Samata Party (India)
  • Saskatchewan Party
  • Schleswigsche Partei