Canadian Pacific Kansas City (CPKC) owns or owned several subsidiary railways Many of these subsidiaries retained their identity for an extended amount of time, others were only on paper.

• Canadian Pacific Railway Limited
  • Canadian Atlantic Railway
    • International Railway of Maine
    • New Brunswick Railway
    • Dominion Atlantic Railway
  • Canadian Atlantic Railway
  • Central Maine and Quebec Railway
  • Columbia and Kootenay Railway
  • Dakota, Minnesota and Eastern Railroad
  • Esquimalt and Nanaimo Railway
  • Grand River Railway
  • Kaslo and Slocan Railway
  • Kettle Valley Railway
  • Lake Erie and Northern Railway
  • Nakusp and Slocan Railway
  • Ontario and Quebec Railway
  • Quebec Central Railway
  • Toronto, Grey and Bruce Railway
  • Toronto, Hamilton and Buffalo Railway
  • St. Lawrence and Hudson Railway
    • Delaware and Hudson Railway
  • Soo Line Railroad

• Kansas City Southern (company)
  • Kansas City Southern Railway
  • Kansas City Southern de México
  • Meridian Speedway
  • Panama Canal Railway