| 1 | JH | Nordeste-Linhas Aereas Regionais, S.A. | ICAO: NES, Callsign: Nordeste, IATA Prefix: 264, Ceased operations. Designator JH reinstated by IATA | BR | AVCODES |
| 2 | JH | Harlequin Air Corporation | ICAO: HLQ, Callsign: Harlequin, Designator JH* recalled by IATA. IATA designator changed from BQ* | J | AVCODES |
| 3 | JH | Pan Adria | | YU | AVCODES |
| 4 | JH | Fuji Dream Airlines Co. Ltd. | ICAO: FDA, | J | AVCODES |
| 5 | JH | John Holland | | AUS | TRAFFIC |
| 6 | JH | Joseph Hubert Bauunternemung GmbH & Co.KG | | DE | VKM |
| 7 | JHAB | J & H TRUCKING | | | SCAC4 |
| 8 | JHAD | J & H LOGISTICS | | | SCAC4 |
| 9 | JHAL | J-HAUL | | | SCAC4 |
| 10 | JHAN | JOHANNES TRUCKING | | | SCAC4 |
| 11 | JHART | Omnibusgesellschaft J. Hartmann GmbH | | D | TRAFFIC |
| 12 | JHBH | JILLAMY WAREHOUSE AND DISTRIBUTION | | | SCAC4 |
| 13 | JHBS | JOHANNES BUS SERVICE INC | | | SCAC4 |
| 14 | JHBU | HUIZHOU JUHUI CONTAINER MANUFACTURE CO., LTD. | | PRC | BIC |
| 15 | JHCH | J & H DISTRIBUTING | | | SCAC4 |
| 16 | JHCI | JOHNSON, JACK | | | SCAC4 |
| 17 | JHCN | JOHNSON CONTROLS | | | SCAC4 |
| 18 | JHCS | JULIUS HYMAN & CO. | | | PWRC |
| 19 | JHCS | JACKS HEAVY TRANSPORT & STORAGE | | | SCAC4 |
| 20 | JHCU | HAMMELMA | | | SCAC4 |
| 21 | JHCX | Julius Hyman & Co. | added 7/1953; 7/1954; eliminated 4/1955 | | NAKINA |
| 22 | JHCX | Julius Hyman & Co. | eliminated 4/55 | | NRHS |
| 23 | JHDS | JIRA HOLDINGS INC | | | SCAC4 |
| 24 | JHEA | JERRY HARRIS EXPRESS LLC | | | SCAC4 |
| 25 | JHEH | JOES HEAVY EQUIPTMENT HAULING CO | | | SCAC4 |
| 26 | JHEI | J & H EXPRESS INC | | | SCAC4 |
| 27 | JHEP | J H EXPRESS | | | SCAC4 |
| 28 | JHFO | J & H FUEL OIL COMPANY | | | SCAC4 |
| 29 | JHFS | JOHANNA FOODS INC | | | SCAC4 |
| 30 | JHGU | JING HE SCIENCE CO, LTD | | RC | BIC |
| 31 | JHGU | JING HE SCIENCE CO LTD | | | SCAC4 |
| 32 | JHHC | JOHNSON-HOUSTON TRANSPORTATION CO | | | SCAC4 |
| 33 | JHHI | J & H HEAVY HAUL INC. | | | SCAC4 |
| 34 | JHHL | JNB HEAVY HAUL | | | SCAC4 |
| 35 | JHHN | J H HAULING & | | | SCAC4 |
| 36 | JHHX | Jno. H. Heald Co. | 7/1930-7/1935 | | NAKINA |
| 37 | JHHX | John H. Heald & Co., Inc. | 8/1920-7/1923 | | NAKINA |
| 38 | JHHX | JOHN H. HEALD CO. | | | PWRC |
| 39 | JHIL | JHI LLC | | | SCAC4 |
| 40 | JHJL | JHJ INTERNATIONAL LIMITED | | | SCAC4 |
| 41 | JHJN | JOHNSON, JOE EQUIPMENT INC | | | SCAC4 |
| 42 | JHJT | JHJ INTERNATIONAL TRANSPORTATION CO | | | SCAC4 |
| 43 | JHK | Xi'an Aviation Base Jinsheng General Aviation Co., Ltd. | Callsign: Shengli, | PRC | AVCODES |
| 44 | JHKV | JOHNSON, KEVIN M & SONS INC | | | SCAC4 |
| 45 | JHL | Jet Heritage Ltd. | Callsign: Heritage, | GB | AVCODES |
| 46 | JHLN | JOHAL TRANSPORT LTD | | | SCAC4 |
| 47 | JHLX | J.H. Leftwich & Co., Inc. | added 1/1963; 7/1965-10/1966; eliminated 10/1968 | | NAKINA |
| 48 | JHLX | J.H. Leftwich & Co., Inc. | 7/65-10/66; eliminated 10/68 | | NRHS |
| 49 | JHLX | J.H. LEFTWICH & CO., INC. | | | PWRC |
| 50 | JHLX | LEFTWICH & CO INC J H | | | SCAC3 |
| 51 | JHM | J H M Cargo Expreso, S.A. | Founded in 1996. Ceased operations during 2000. | CR | AVCODES |
| 52 | JHM | JHM Cargo Expreso | | | ICAO1 |
| 53 | JHMD | Jindrichohradecké místní dráhy, a. s. | | CZ | TRAFFIC |
| 54 | JHMD | Jindřichohradecké mistni dráhy, a.s. | | CZ | VKM |
| 55 | JHMI | JOHNSON WREATHS LTD | | | SCAC4 |
| 56 | JHMN | J.H.M. LEASING, INC | | | SCAC1 |
| 57 | JHMO | JOHNSON'S MOTOR EXPRESS | | | SCAC1 |
| 58 | JHMS | JAYHAWK MOVING & STORAGE INC | | | SCAC4 |
| 59 | JHMV | JOHNSON MOVING AND STORAGE | | | SCAC4 |
| 60 | JHMX | Alabama Power Co. | added 4/1998; eliminated 7/1999; added 10/1999; 7/2000-7/2005 | | NAKINA |
| 61 | JHMX | Alabama Power Co. | added 4/98; eliminated 7/99; added 10/99; 7/2000 | | NRHS |
| 62 | JHMX | ALABAMA POWER COMPANY | | | PWRC |
| 63 | JHMX | Alabama Power | | | RSRV |
| 64 | JHMX | ALABAMA POWER COMPANY | | | SCAC4 |
| 65 | JHN | Johnson Air, Inc. | Callsign: Air Johnson, | USA | AVCODES |
| 66 | JHN | Johnson Air | | | ICAO1 |
| 67 | JHND | JOHNSON, DALE, TRUCKING, INC | | | SCAC1 |
| 68 | JHNF | JOHN FARMS TRUCKING INC | | | SCAC4 |
| 69 | JHNI | JOHNSTON TRUCKING INC | | | SCAC4 |
| 70 | JHNJ | JOHNSONVILLE TRUCKING LLC | | | SCAC4 |
| 71 | JHNL | JOHNSON, GLENDON | | | SCAC4 |
| 72 | JHNO | JOHNSONS TRUCKING | | | SCAC4 |
| 73 | JHNT | JOHNS TRUCK | | | SCAC4 |
| 74 | JHNW | JOHNSON OF WISCONSIN TRANSPORT CO I | | | SCAC4 |
| 75 | JHNY | JOHNSON, TERRY L | | | SCAC4 |
| 76 | JHOC | JOHNSON OIL CO | | | SCAC4 |
| 77 | JHOI | JOHNS OIL | | | SCAC4 |
| 78 | JHOL | JOHNSON MOTOR LINES INC | | | SCAC4 |
| 79 | JHOO | J & H OIL CO | | | SCAC4 |
| 80 | JHOQ | JHOS LOGISTICS AND TRANSPORTATION I | | | SCAC4 |
| 81 | JHPI | JOHNSON PETROLEUM INC | | | SCAC4 |
| 82 | JHPT | JANETH, P TRANSPORT | | | SCAC4 |
| 83 | JHPU | SYNERGY HEALTH STERILISATION UK LTD | | GB | BIC |
| 84 | JHPX | NOVA Chemicals, Inc. | added 1/2002; 7/2005; eliminated 10/2006 | | NAKINA |
| 85 | JHPX | NOVA Chemicals (USA) Inc. | 7/2000; eliminated 1/2002 | | NAKINA |
| 86 | JHPX | Huntsman Chemical Corp. | added 10/1983; 1/1994 | | NAKINA |
| 87 | JHPX | Huntsman Chemical Corp. | added 10/83; 1/94 | | NRHS |
| 88 | JHPX | NOVA Chemicals (USA) Inc. | Jul-00 | | NRHS |
| 89 | JHPX | *HUNTSMAN CHEMICAL CORPORATION | | | PWRC |
| 90 | JHPX | +NOVA CHEMICALS | | | PWRC |
| 91 | JHPX | Huntsman Chemical Corporation (NOVA Chemicals) | | | RSRV |
| 92 | JHPX | NOVA CHEMICALS INC | | | SCAC4 |
| 93 | JHRD | JOHNSON, RICHARD E INC | | | SCAC4 |
| 94 | JHSD | JOHN & SANDRA INC | | | SCAC4 |
| 95 | JHSH | JH SHIPPING CO LTD | | | SCAC4 |
| 96 | JHSI | JANZEN, HENRY STEEL BUILDINGS LTD | | | SCAC4 |
| 97 | JHSN | JOHNSON TRANSPORT INC | | | SCAC4 |
| 98 | JHSU | JOHAN SHIPPING SDN BHD | | | SCAC4 |
| 99 | JHTB | JUJHAR TRANSPORT INC | | | SCAC4 |
| 100 | JHTC | J & H TRANSPORTATION INC | | | SCAC4 |
