CP may stand for:

• Caminhos de Ferro Portugueses, Portuguese Railways
• The Canadian Pacific conglomerate, including:
  • Canadian Pacific Railway, known at one time as CP Rail.
  • Canadian Pacific Air Lines, known at one time as CP Air; after this was sold and became Canadian Airlines International, it still retained the IATA airline code CP.
• Canadian Press
• Cathodic Protection
• Central Pacific Railroad
• Cerebral palsy
• Code page
• Colombo Plan
• Communist Party
• Control Point, a term used for interlockings on Conrail trackage
• Conditional proof
• Construction permit
• Control Panel
• The copy command on Unix and Linux
• CP-symmetry