| 1 | HOG | Arkansas Traveler Airline | Callsign: Hog-Air, | USA | AVCODES |
| 2 | HOG | Mahogany Air Charters | IATA: KT, Callsign: Hogan Air, Suspended operations in 2014. | Z | AVCODES |
| 3 | HOG | Heart of Georgia R.R., Inc. | 7/2000-7/2005 | | NAKINA |
| 4 | HOG | Heart of Georgia R.R., Inc. | Jul-00 | | NRHS |
| 5 | HOG | HEART OF GEORGIA RAILROAD | | | PWRC |
| 6 | HOG | Heart of Georgia Railroad | | | RSRV |
| 7 | HOG | HEART OF GEORGIA RAILROAD INC | | | SCAC4 |
| 8 | HOG | Heart of Georgia | | USA | TRAFFIC |
| 9 | HOGD | HOGAN DEDICATED SERVICES LLC | | | SCAC4 |
| 10 | HOGE | HOGEMANN TRANSPORT LTD | | | SCAC4 |
| 11 | HOGH | HOSIEN, GHASSAN | | | SCAC4 |
| 12 | HOGL | HOAGLAND'S TRANSPORT SERVICE, INC. | | | SCAC1 |
| 13 | HOGL | HOAGLANDS TRANSPORT SERVICE, INC | | | SCAC4 |
| 14 | HOGT | HOGLAND TRANSFER CO | | | SCAC1 |
| 15 | HOGW | HOG WILD TRANSPORT | | | SCAC4 |
| 16 | HOGX | Clougherty Packing Co. | added 1/1990; 1/1994; eliminated 4/1997 | | NAKINA |
| 17 | HOGX | Harlis Oil & Gas Co. | 7/1923 | | NAKINA |
| 18 | HOGX | Clougherty Packing Co. | added 1/90; 1/94; eliminated 4/97 | | NRHS |
| 19 | HOGX | *HARLIS OIL & GAS CO. | | | PWRC |
| 20 | HOGX | *CLOUGHERTY PACKING | | | PWRC |
| 21 | HOGX | *UNION PACIFIC RAILROAD | | | PWRC |
| 22 | HOGX | Harlis Oil & Gas (Union Pacific Railroad) | | | RSRV |
