| 1 | KRF | UK Royal / VIP Flights (in military aircraft) | Callsign: Kittyhawk, | GB | AVCODES |
| 2 | KRF | United Kingdom Royal VIP Flights | | | ICAO1 |
| 3 | KRFN | KRAFT FOODS GLOBAL INC | | | SCAC4 |
| 4 | KRFR | KEEN RIDGE FARMS | | | SCAC4 |
| 5 | KRFT | KRAFT, BEN TRUCKING | | | SCAC3 |
| 6 | KRFT | KEARFOTT PRECISIONES GENERALES DE M | | | SCAC4 |
| 7 | KRFX | Kraft Foods, a Division of National Dairy Products Corp. | added 7/1958; eliminated 4/1961; added 7/1961; eliminated 1/1962 | | NAKINA |
| 8 | KRFX | Kraft Foods, a Division of National Dairy Products Corp. | added 7/58; eliminated 4/61; eliminated 1/62 | | NRHS |
| 9 | KRFX | KRAFT FOODS, DIV. NATIONAL DAIRY PRODUCTS CORP. | | | PWRC |
| 10 | KRFX | Kraft Foods, a division of National Dairy Products Corp. | | USA | TRAFFIC |
