| 1 | HMP | Papair Terminal, S.A. | Callsign: Papair Terminal, | RH | AVCODES |
| 2 | HMP | Papair Terminal | | | ICAO1 |
| 3 | HMPC | HAMMONS PRODUCTS COMPANY | | | SCAC4 |
| 4 | HMPD | HAMILTON PAPER BOX CO LTD | | | SCAC4 |
| 5 | HMPF | HAMILTON PLASTIC FABRICATORS (1997) | | | SCAC4 |
| 6 | HMPG | HAMPS TRUCKING | | | SCAC4 |
| 7 | HMPK | HOMAY, PATRICK | | | SCAC4 |
| 8 | HMPL | HAMPL TRANSPORTATION INCORPORATED | | | SCAC4 |
| 9 | HMPM | HOMA PETROLEUM | | | SCAC4 |
| 10 | HMPN | HAMPTON TRUCKING L L C | | | SCAC4 |
| 11 | HMPO | HAMPTON FUEL INC | | | SCAC4 |
| 12 | HMPP | HEMPEL TRANSPORTATION LLC | | | SCAC4 |
| 13 | HMPQ | HIKE METAL PRODUCTS LIMITED | | | SCAC4 |
| 14 | HMPT | HAMPTON ROADS MOVING & STORAGE (HAM | | | SCAC4 |
| 15 | HMPU | HOYER GMBH | | D | BIC |
| 16 | HMPX | Halstead Metal Products, Inc. | added 1/1966; 10/1966; eliminated 7/1969 | | NAKINA |
| 17 | HMPX | National Car Co. | 1/1945-4/1947 | | NAKINA |
| 18 | HMPX | Halstead Metal Products, Inc. | added 1/66; 10/66; eliminated 7/69 | | NRHS |
| 19 | HMPX | *NATIONAL CAR CO. | | | PWRC |
| 20 | HMPX | *HALSTEAD METAL PRODUCTS, INC. | | | PWRC |
| 21 | HMPY | HUMPHRYS TEXTILE PRODUCTS | | | SCAC4 |
