| 1 | KOG | Missouri Pacific System | eliminated 1/1980 | | NAKINA |
| 2 | KOG | Missouri Pacific Railroad Co. | added 1/1977; 1/1980 | | NAKINA |
| 3 | KOG | Texas and Pacific Railway Co. | 1/1975; eliminated 1/1977 | | NAKINA |
| 4 | KOG | Texas and Pacific Railway Co. | 1/75; eliminated 1/77 | | NRHS |
| 5 | KOG | Missouri Pacific Railroad Co. | added 1/77; 1/80 | | NRHS |
| 6 | KOG | Missouri Pacific System | eliminated 1/80 | | NRHS |
| 7 | KOG | UP [MISSOURI PACIFIC; TEXAS & PACIFIC RWY. CO.; KANSAS OKLAHOMA & GULF RY.] | | | PWRC |
| 8 | KOG | Kansas, Oklahoma and Gulf Railway (Union Pacific Railroad) | | | RSRV |
| 9 | KOG | Kansas, Oklahoma & Gulf | | USA | TRAFFIC |
| 10 | KOGH | KOTEK, GARY TRUCKING INC (HOURLY TR | | | SCAC4 |
| 11 | KOGL | K O CARTAGE LTD | | | SCAC3 |
| 12 | KOGO | KOTEK, GARY TRUCKING INC (ONE (1) W | | | SCAC4 |
| 13 | KOGR | KOGERS INC | | | SCAC4 |
| 14 | KOGT | KOTEK, GARY TRUCKING INC | | | SCAC3 |
| 15 | KOGWR | Zespół Elektrociepłowni Wrocławskich KOGENERACJA S.A. | | PL | VKM |
