| Abbreviation | Definition |
|---|---|
| KOG | Kansas Oklahoma & Gulf Railroad |
| KOG | Kansas, Oklahoma and Gulf Railway (Union Pacific Railroad) |
| KOSU | King Ocean Services |
| KPCX | Koppers Industries |
| KPCX | Koppers Industries Incorporated |
| KPCZ | K and P Cartage |
| KPCZ | K and P Cartage Company |
| KPGX | Kentucky Processing |
| KPGX | Kentucky Processing Company |
| KPLU | K Line |
| KPLX | Koppel (Western Resources) |
| KPLX | Western Resources Incorporated |
| KPPX | KRATON Polymers US |
| KPR | Kelowna Pacific Railway |
| KPRR | Kodak Park Railroad |
| KPXX | Progress Rail Services Corporation |
| KPXX | Progress Rail Services Corporation (The Andersons) |
| KPY | Karunagappalli |
| KRCL | Konkan Railway Corporation Limited |
| KRDX | KRDX Co. |