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
- 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
- Soo Line Railroad