| 1 | HMX | Hawk de Mexico S.A. de C.V. | Callsign: Hawk Mexico, | MEX | AVCODES |
| 2 | HMX | Hawk De Mexico | | | ICAO1 |
| 3 | HMX | Hyman-Michaels Co., a Division of Azcon Corp. | added 4/1977; 1/1980; eliminated 4/1984 | | NAKINA |
| 4 | HMX | Hyman-Michaels Co. | 7/1930-1/1975; eliminated 4/1977 | | NAKINA |
| 5 | HMX | Hyman-Michaels Co. | 4/38-1/75 | | NRHS |
| 6 | HMX | Hyman-Michaels Co., a Division of Azcon Corp. | 1/80; eliminated 4/84 | | NRHS |
| 7 | HMX | HYMAN-MICHAELS CO., DIV. AZCON CORP. | | | PWRC |
| 8 | HMXC | HOLMER TRANSPORT INC | | | SCAC4 |
| 9 | HMXD | HOLMES TRANSPORT LTD | | | SCAC4 |
| 10 | HMXI | HOMELAND EXPRESS INC | | | SCAC4 |
| 11 | HMXL | HAMMTRANS LLC | | | SCAC4 |
| 12 | HMXO | HOMAX OIL SALES INC | | | SCAC4 |
| 13 | HMXT | HAMMONDS TRANSPORT | | | SCAC4 |
