| 1 | KFR | Kingfisher Airlines Limited | IATA: IT, Callsign: Kingfisher, AOC temporarily suspended by Indian DGAC due financial issues. | IND | AVCODES |
| 2 | KFR | Kingfisher Airlines | IATA: IT | | ICAO1 |
| 3 | KFR | Kettle Falls International Ry. LLC | 7/2005 | | NAKINA |
| 4 | KFR | KETTLE FALLS INTERNATIONAL RWY. LLC | | | PWRC |
| 5 | KFR | Kettle Falls International Railway | | | RSRV |
| 6 | KFR | KETTLE FALLS INTERNATIONAL RAILWAY | | | SCAC4 |
| 7 | KFRC | KAT FUEL RESOURCES | | | SCAC4 |
| 8 | KFRD | KENNEDY, FRED TRUCKING INC | | | SCAC3 |
| 9 | KFRD | KENNEDY, FRED TRUCKING INC | | | SCAC4 |
| 10 | KFRG | KSI FREIGHT | | | SCAC4 |
| 11 | KFRH | KERFORD, ROBERT H | | | SCAC3 |
| 12 | KFRL | KLONDIKE FARMS LTD | | | SCAC4 |
| 13 | KFRS | KEFOR STRUCTURES LTEE | | | SCAC4 |
| 14 | KFRU | KILFROST LIMITED | | | SCAC4 |
| 15 | KFRX | Chicago Freight Car Leasing Co. | added 1/1970; 4/1970-1/1975; eliminated 1/1983 | | NAKINA |
| 16 | KFRX | Chicago Freight Car Leasing Co. | added 1/70; 4/70-1/75; eliminated 1/83 | | NRHS |
| 17 | KFRX | CHICAGO FREIGHT CAR LEASING CO. | | | PWRC |
