| 1 | EMP | Empire Air Service, Inc. | Callsign: Empire, Name changed from Empire Airlines | USA | AVCODES |
| 2 | EMP | Empire Airlines | Callsign: Empire, Name changed to Empire Air Service, Inc. | USA | AVCODES |
| 3 | EMP | Empire Air Service | | | ICAO1 |
| 4 | EMPA | EMPIRE TRANSPORT | | | SCAC4 |
| 5 | EMPD | ELCO METAL PRODUCTS CORPORATION | | | SCAC3 |
| 6 | EMPH | EMERSON, PHILLIP M | | | SCAC3 |
| 7 | EMPI | EMPIRE STORAGE COMPANY INC | | | SCAC3 |
| 8 | EMPI | EMPIRE STORAGE COMPANY INC | | | SCAC4 |
| 9 | EMPK | EMPAK TRANSPORTATION COMPANY | | | SCAC3 |
| 10 | EMPL | ENTREPRISE MICHEL PELLETIER INC | | | SCAC4 |
| 11 | EMPM | EMPIRE METALS INC | | | SCAC3 |
| 12 | EMPM | EMPREM | | | SCAC4 |
| 13 | EMPN | EMPIRE STORAGE & VAN CORPORATION | | | SCAC3 |
| 14 | EMPO | EMPLOYEE TRUCKING INC | | | SCAC3 |
| 15 | EMPO | EMPROS SHIPPING MANAGEMENT SA | | | SCAC4 |
| 16 | EMPP | EMPIRE COMPANY INC, THE | | | SCAC4 |
| 17 | EMPQ | EMPACHER | | | SCAC4 |
| 18 | EMPR | EMPRESA | | | SCAC4 |
| 19 | EMPS | EMPIRE SAND AND GRAVEL CO, INC | | | SCAC3 |
| 20 | EMPT | E M P TRUCKING COMPANY | | | SCAC3 |
| 21 | EMPU | REZ-1 | | | PWRC |
| 22 | EMPU | REZ-1 | | | RSRV |
| 23 | EMPU | EMPROS LINES | | | SCAC3 |
| 24 | EMPU | EMP | | | SCAC4 |
| 25 | EMPV | EMPIRE VAN & STORAGE | | | SCAC3 |
| 26 | EMPV | EMPIRE NAVIGATION LTD | | | SCAC4 |
| 27 | EMPW | EMPIRE STORAGE WAREHOUSE, INC | | | SCAC3 |
| 28 | EMPX | Empiregas Equipment Corp. | added 7/1980; 1/1994; eliminated 7/1996; added 10/1996; eliminated 1/1997; 7/2000-7/2005 (not listed) | | NAKINA |
| 29 | EMPX | Empire Gas Equipment Corp. | added 1/1972; 1/1975-1/1980; eliminated 7/1980 | | NAKINA |
| 30 | EMPX | National Car Co. | eliminated 4/1961 | | NAKINA |
| 31 | EMPX | Fruit Growers Express Co. | 4/1938-10/1957; 4/1961 (not listed) | | NAKINA |
| 32 | EMPX | Fruit Growers Express Co. (Emmart Packing Co.) | 7/1937 | | NAKINA |
| 33 | EMPX | Emmart Packing Co. (National Car Co.) | Apr-38 | | NRHS |
| 34 | EMPX | Fruit Growers Express Co. | 1/52-4/61 | | NRHS |
| 35 | EMPX | National Car Co. | eliminated 4/61 | | NRHS |
| 36 | EMPX | Empire Gas Equipment Corp. | added 1/72; 1/75-1/80; eliminated 7/80 | | NRHS |
| 37 | EMPX | Empiregas Equipment Corp. | added 7/80; 1/94; eliminated 7/96; added 10/96; eliminated 1/97; 7/2000 | | NRHS |
| 38 | EMPX | *EMMART PACKING CO. (FRUIT GROWERS EXPRESS CO.; NATIONAL CAR CO.) | | | PWRC |
| 39 | EMPX | +EMPIREGAS EQUIPMENT CORP. | | | PWRC |
| 40 | EMPX | Empiregas Equipment Corporation | | | RSRV |
| 41 | EMPX | EMPIREGAS | | | SCAC4 |
