| 1 | JP | Inex-Adria Airways | ICAO: ADR, Callsign: Adria, Name changed to Adria Airways. Name changed form Adria Aviopromet | YU | AVCODES |
| 2 | JP | Adria Airways | ICAO: ADR, Callsign: Adria, IATA Prefix: 165, Name changed form Inex-Adria | YU | AVCODES |
| 3 | JP | Adria Aviopromet | Name changed to Inex-Adria | YU | AVCODES |
| 4 | JP | Inex Adria Aviopromet | ICAO: IAA, Callsign: Juliett Papa, | YU | AVCODES |
| 5 | JPA | Operational Support Airlift Command (OSACOM) | Callsign: J-Pat, | USA | AVCODES |
| 6 | JPA | OSACOM | | | ICAO1 |
| 7 | JPA | JACKSONVILLE PORT AUTHORITY | | | PWRC |
| 8 | JPAB | J P TRANSPORT LLC | | | SCAC4 |
| 9 | JPAK | JPAK | | | SCAC4 |
| 10 | JPAN | JAPAN TRANSCITY CORPORATION | | | SCAC4 |
| 11 | JPB | ACP Jet Charters, Inc. | Callsign: Palmbeach Jet, Merged with FJI Jets to form Alerion Aviation. | USA | AVCODES |
| 12 | JPB | Alerion Aviation | Callsign: Palmbeach Jet, Formed by merger of FJI Jets and ACP Jet Charters. | USA | AVCODES |
| 13 | JPBX | Peninsula Corridor Joint Powers Board | added 10/2003; eliminated 1/2004; 7/2005 (not listed) | | NAKINA |
| 14 | JPBX | PENINSULA CORRIDOR JOINT POWERS BOARD | | | PWRC |
| 15 | JPBX | PENINSULA CORRIDOR JOINT POWERS BOARD (CALTRAIN) | | | PWRC |
| 16 | JPBX | Peninsula Corridor Joint Powers Board (Caltrain) | | | RSRV |
| 17 | JPBX | PENINSULA CORRIDOR JOINT POWERS BOA | | | SCAC4 |
| 18 | JPBX | Caltrain | | USA | TRAFFIC |
| 19 | JPCF | JPC FREIGHT FORWARDING, INC. | | | SCAC1 |
| 20 | JPCF | JOSHUA TRANSPORT INC | | | SCAC4 |
| 21 | JPCG | JPC TRUCKING | | | SCAC4 |
| 22 | JPCI | JAPAN CRUISE LINE INC | | | SCAC4 |
| 23 | JPCT | JPC TOWING SERVICE | | | SCAC4 |
| 24 | JPCU | JP EXPRESS SERVICES PTE LTD | | | SCAC4 |
| 25 | JPCX | John Powell Chemical Co. | 1/1952-7/1954; eliminated 4/1956 | | NAKINA |
| 26 | JPCX | Johnson Produce Co. | 7/1935 | | NAKINA |
| 27 | JPCX | John Powell Chemical Co. | Jan-52 | | NRHS |
| 28 | JPCX | JOHN POWELL CHEMICAL CO. | | | PWRC |
| 29 | JPCY | J & P CYCLES | | | SCAC4 |
| 30 | JPEQ | J. P.'S EXPRESS, INC | | | SCAC1 |
| 31 | JPEQ | JUMP, JOHN TRUCKING INC | | | SCAC4 |
| 32 | JPFC | J P FUEL TRANSPORT INC | | | SCAC4 |
| 33 | JPFL | JJR PRODUCE & FREIGHT LLC | | | SCAC4 |
| 34 | JPGC | J P GUNITE INC | | | SCAC4 |
| 35 | JPGI | JHE PRODUCTION GROUP INC | | | SCAC4 |
| 36 | JPGT | J P GROUP TRANSPORTATION INC | | | SCAC4 |
| 37 | JPH | Jetport SPB, LLC | | RUS | AVCODES |
| 38 | JPIM | JPI MAJESTIC INC | | | SCAC4 |
| 39 | JPIN | JUNIOR PINATAS | | | SCAC4 |
| 40 | JPIQ | JANNEY PAINTING INC | | | SCAC4 |
| 41 | JPIS | JET PRO INC | | | SCAC4 |
| 42 | JPJ | Aircompany Jupiter Jet LLP | IATA: IM, Callsign: Jupiterjet, IATA Prefix: 707, | KZ | AVCODES |
| 43 | JPK | Jet Port Region LLC | | RUS | AVCODES |
| 44 | JPK | Jelezopaten komplex / \"Железопътен комплекс\" ЕАД | | BG | VKM |
| 45 | JPL | Atlas Airlines, S.A. | Callsign: Atlasflight, | RO | AVCODES |
| 46 | JPL | JetsPlus | Callsign: Sequoia, | USA | AVCODES |
| 47 | JPLN | JOPLIN TRANSPORT INC | | | SCAC4 |
| 48 | JPLO | J P LOGISTICS INC | | | SCAC4 |
| 49 | JPMN | JP MOTORSPORTS INC | | | SCAC4 |
| 50 | JPMR | J P M COURIERS INC | | | SCAC4 |
| 51 | JPMX | Jersey Railway Equipment Co., LLC | added 1/2007 | | NAKINA |
| 52 | JPMX | John P. Manard | 1/1945-1/1946 | | NAKINA |
| 53 | JPMX | JERSEY RAILWAY EQUIPMENT CO., LLC | | | PWRC |
| 54 | JPMX | JERSEY RAILWAY EQUIPMENT CO LLC | | | SCAC4 |
| 55 | JPN | Memrykord Ltd. | Callsign: Jetplan, Name changed to Jeppesen UK Ltd. Flight Plan System. Non-airline org. relating to the airline industry | GB | AVCODES |
| 56 | JPN | Jeppesen UK Ltd. | Callsign: Jetplan, Name changed from Memrykord Ltd. Flight Plan System. Non-airline org. relating to the airline industry | GB | AVCODES |
| 57 | JPN | Jeppesen UK | | | ICAO1 |
| 58 | JPNE | JEP NAVEGACAO LDA | | | SCAC4 |
| 59 | JPNL | J P TRANSPORT LTD | | | SCAC4 |
| 60 | JPO | Jetpro, S.A. de C.V. | Callsign: Jetpro, | MEX | AVCODES |
| 61 | JPO | Jetpro | | | ICAO1 |
| 62 | JPOU | JOHAN SHIPPING SDN BHD | | | SCAC4 |
| 63 | JPPC | JOHNSTON PAPER CO | | | SCAC4 |
| 64 | JPPI | JACOBS PETROLEUM PRODUCTS INC | | | SCAC4 |
| 65 | JPPM | JP'S PIANO MOVING LLC | | | SCAC4 |
| 66 | JPPT | J & P PETROLEUM INCORPORATED | | | SCAC4 |
| 67 | JPPZ | JAX PORT AUTHORITY | | | PWRC |
| 68 | JPQ | Jett Paqueteria, S.A. de C.V. | Callsign: Jett Paqueteria, | MEX | AVCODES |
| 69 | JPQ | Jett Paqueteria | | | ICAO1 |
| 70 | JPR | Inversiones Ayacucho S.A. (Jet Privaido) | Callsign: Jet Privado, | RCH | AVCODES |
| 71 | JPR | Aerosmith Aviation | Callsign: Jasper, | USA | AVCODES |
| 72 | JPR | Taxi Fly Group S.A. | IATA: P5, Designator P5* recalled by IATA | E | AVCODES |
| 73 | JPR | U.S. Department of Interior | Callsign: Jumper, | USA | AVCODES |
| 74 | JPR | Aerosmith Aviation | | | ICAO1 |
| 75 | JPRD | JAIMES PRODUCE | | | SCAC4 |
| 76 | JPRL | JPR LOGISTICS INC | | | SCAC4 |
| 77 | JPRU | JP RYAN LTD | | IRL | BIC |
| 78 | JPRU | J P RYAN LTD | | | SCAC4 |
| 79 | JPRX | The Rausch Co., Inc. | 7/1935-4/1938 | | NAKINA |
| 80 | JPRX | The Rausch Co., Inc. | Apr-38 | | NRHS |
| 81 | JPRX | THE RAUSCH CO., INC. | | | PWRC |
| 82 | JPS | Air National Corporate Ltd | Callsign: Jetplus, Founded in 1989, Ceased operations January 2011. | NZ | AVCODES |
| 83 | JPSA | JAPAN STAR AMERICA | | | SCAC4 |
| 84 | JPSE | JPS EXPRESS INC | | | SCAC4 |
| 85 | JPSG | JPS TRUCKING | | | SCAC4 |
| 86 | JPSI | J P SHELLFISH INC | | | SCAC4 |
| 87 | JPSN | JEPSON TRANSPORT LLC | | | SCAC4 |
| 88 | JPSP | JPS EXPRESS VA INC | | | SCAC4 |
| 89 | JPSU | JP CONTAINER LIMITED | | PRC | BIC |
| 90 | JPSV | JAMESTOWN PELLET STOVES | | | SCAC4 |
| 91 | JPT | Jupiter-Avia | Callsign: Jupiter, | AM | AVCODES |
| 92 | JPT | Prime Jet | Callsign: Primetime, | USA | AVCODES |
| 93 | JPTA | J&P TRANSPORTATION, INC | | | SCAC1 |
| 94 | JPTB | J & P TRUCKING | | | SCAC4 |
| 95 | JPTD | J P TRUCKING | | | SCAC4 |
| 96 | JPTG | J P T TRUCKING LLC | | | SCAC4 |
| 97 | JPTH | J & P TRANSPORT LLC | | | SCAC4 |
| 98 | JPTJ | J P TRANSPORT | | | SCAC4 |
| 99 | JPTK | J P TRUCKING INC | | | SCAC4 |
| 100 | JPTM | JONES PETROLEUM TRANSPORT COMPANY | | | SCAC4 |
