| Abbreviation | Definition |
|---|---|
| KCMX | PLM International Incorporated |
| KCNW | Kelley's Creek and Northwestern Railroad |
| KCPX | Kemira Chemicals Canada |
| KCRC | Kowloon-Canton Railway Corporation |
| KCRX | Kootenay Central Rail Services |
| KCRX | Kootenay Central Rail Services Limited |
| KCS | Kansas City Southern Railway |
| KCS | Kansas City Southern Railway Company |
| KCSM | Kansas City Southern de Mexico |
| KCSU | Kansas City Southern Railway |
| KCSU | Kansas City Southern Railway Company |
| KCSZ | Kansas City Southern Railway |
| KCSZ | Kansas City Southern Railway Company |
| KCT | Kansas City Terminal Railway |
| KCTV | KCT Railway |
| KCTV | KCT Railway Corporation |
| KCWB | Kansas City Westport Belt |
| KCWX | Kimberly-Clark of Canada |
| KCWX | Kimberly-Clark of Canada Limited |
| KCY | Kansas City Amtrak Station |