| 1601 | JJJX | LEGEND MARKETING LTD. [JJ RAIL CAR LEASING LIMITED] | | | PWRC |
| 1602 | JJJX | JJ Railcar Leasing | | | RSRV |
| 1603 | JJJX | LEGEND MARKETING LTD | | | SCAC4 |
| 1604 | JJKG | J & J TRUCKING | | | SCAC4 |
| 1605 | JJKI | J J TRUCKING LLC | | | SCAC4 |
| 1606 | JJKL | J & J TRUCKING ENTERPRISES LLC | | | SCAC4 |
| 1607 | JJKN | J AND J TRUCKING | | | SCAC4 |
| 1608 | JJKQ | JONES, JACK, TRUCKING, INC | | | SCAC1 |
| 1609 | JJKQ | JONES, JACK TRUCKING INC | | | SCAC4 |
| 1610 | JJKS | J J K TRANSPORT | | | SCAC4 |
| 1611 | JJKT | J & J TRUCKING INC | | | SCAC4 |
| 1612 | JJKY | J & J TRANSPORTATION | | | SCAC4 |
| 1613 | JJKY | Joutjärvi & Joutjärvi Ky | | FI | VKM |
| 1614 | JJLA | J & J LINEHAUL | | | SCAC4 |
| 1615 | JJLD | J.J.L. DISTRIBUTION SYSTEMS, INC | | | SCAC1 |
| 1616 | JJLD | J J L DISTRIBUTION SYSTEMS INC | | | SCAC4 |
| 1617 | JJLG | J & J LOG AND LUMBER CORP | | | SCAC4 |
| 1618 | JJLK | JOHNSON, J & L TRUCKING | | | SCAC4 |
| 1619 | JJLM | J & J LOGISTIC LLC | | | SCAC4 |
| 1620 | JJLN | LANAHAN, J J, INC | | | SCAC3 |
| 1621 | JJLN | J & J LEASING INC | | | SCAC4 |
| 1622 | JJLO | JOHNSON & JOHNSON LOGISTICS | | | SCAC4 |
| 1623 | JJLQ | J & J LOGISTIC | | | SCAC4 |
| 1624 | JJM | Regional Geodata Air S.A. | Callsign: Geodata, | E | AVCODES |
| 1625 | JJM | Regional Geodata Air | | | ICAO1 |
| 1626 | JJMC | JJM CONSTRUCTION LTD | | | SCAC4 |
| 1627 | JJMI | J & J MOTORING INC | | | SCAC4 |
| 1628 | JJMN | J & J MACHINES | | | SCAC4 |
| 1629 | JJMS | J & J MOVING & | | | SCAC4 |
| 1630 | JJMT | JOHNSON, JIM TRUCKING LTD | | | SCAC4 |
| 1631 | JJNG | J J TRUCKING | | | SCAC4 |
| 1632 | JJOA | J & J OIL CO INC | | | SCAC4 |
| 1633 | JJOL | J & J OIL COMPANY INC | | | SCAC4 |
| 1634 | JJP | Jetstar Japan | IATA: GK, Callsign: Orange Liner, | J | AVCODES |
| 1635 | JJP | Jetstar Japan | | J | TRAFFIC |
| 1636 | JJPA | JONES, JOHN PAUL OIL CO INC | | | SCAC4 |
| 1637 | JJPK | JJP TRUCKING INC | | | SCAC4 |
| 1638 | JJPM | J & J PETROLEUM TRANSPORT LLC | | | SCAC4 |
| 1639 | JJPQ | JENKS, J P INC | | | SCAC4 |
| 1640 | JJPR | J & J PRODUCE INC | | | SCAC4 |
| 1641 | JJPT | J & J TRANSPORT & SALES LLC | | | SCAC4 |
| 1642 | JJRA | JJR TRUCKING | | | SCAC4 |
| 1643 | JJRD | J and J R.R., Inc. | added 4/1986; eliminated 1/1991; 1/1994-7/2005 | | NAKINA |
| 1644 | JJRD | J and J R.R., Inc. | added 4/86; eliminated 1/91; 1/94-7/2000 | | NRHS |
| 1645 | JJRD | J & J RAILROAD INC. | | | PWRC |
| 1646 | JJRD | J and J Railroad | | | RSRV |
| 1647 | JJRE | J & J REFUSE INC | | | SCAC4 |
| 1648 | JJRN | J & J TRANSPORTATION | | | SCAC4 |
| 1649 | JJRT | JJ TRUCKING | | | SCAC4 |
| 1650 | JJRX | JOLIET JUNCTION RAILROAD | | | PWRC |
| 1651 | JJSC | JJS LLC | | | SCAC4 |
| 1652 | JJSF | J & J SNACK FOODS TRANSPORT CORP | | | SCAC4 |
| 1653 | JJSL | J & J & SONS LOBSTER BAIT | | | SCAC4 |
| 1654 | JJSN | J & J SPECIALIZED INC | | | SCAC4 |
| 1655 | JJSS | JJES EXPRESS | | | SCAC4 |
| 1656 | JJST | JJS TRANSPORTATION & DISTRUBITON CO | | | SCAC4 |
| 1657 | JJT | JO JO'S TRAVELERS | | | SCAC4 |
| 1658 | JJTB | J & J TRUCKING | | | SCAC4 |
| 1659 | JJTC | JONES, JASON TRUCKING INC | | | SCAC4 |
| 1660 | JJTD | J & J'S TRI-STATE DELIVERY SERVICE | | | SCAC4 |
| 1661 | JJTE | J & J TRUCK TRAINING CENTRE | | | SCAC4 |
| 1662 | JJTH | J & J TRANSFER INC | | | SCAC4 |
| 1663 | JJTK | J & J TRUCKING LLC | | | SCAC4 |
| 1664 | JJTL | JJT LLC | | | SCAC4 |
| 1665 | JJTO | J & J TOOL & MOLD LIMITED | | | SCAC4 |
| 1666 | JJTR | JJS & ASSOCIATES INC | | | SCAC4 |
| 1667 | JJTR | JJ Travel | | GB | TRAFFIC |
| 1668 | JJTT | J & J TRUCKING ENTERPRISES INC | | | SCAC4 |
| 1669 | JJTW | JJT LOGISTICS LLC | | | SCAC4 |
| 1670 | JJUK | J J TRUCKING | | | SCAC4 |
| 1671 | JJW | Sternair, Inc. d/b/a Jetway | Callsign: Jetway, | USA | AVCODES |
| 1672 | JJWX | J.J. White Products Co. (J.J. White, Sole Owner) | 1/1946-1/1950 | | NAKINA |
| 1673 | JJWX | J. J. WHITE PRODUCTS CO. | | | PWRC |
| 1674 | JJXC | JOHNSON & JOHNSON TRANSPORT INC | | | SCAC4 |
| 1675 | JJXE | J J EXPRESS | | | SCAC4 |
| 1676 | JJXG | JOMIJE TRANSPORTING LLC | | | SCAC4 |
| 1677 | JJXN | J & J TRANSPORTATIONS INC | | | SCAC4 |
| 1678 | JK | Spanair, S.A. | ICAO: JKK, Callsign: Spanair, IATA Prefix: 680, Founded in 1986. Ceased operations on 27 January 2012. ICAO designator changed from SPP | E | AVCODES |
| 1679 | JK | Spanair, S.A. | ICAO: SPP, Callsign: Sunwing, IATA Prefix: 680, ICAO designator changed to JKK / Callsign to Spanair | E | AVCODES |
| 1680 | JK | Central Caribbean Air Ltd. | Callsign: Juliett Kilo, | AG | AVCODES |
| 1681 | JK | Friendly Islands Airways Limited | ICAO: HRH, Callsign: Tonga Royal, | TO | AVCODES |
| 1682 | JK | Aercaribe Aerolina del Caribe, S.A. | ICAO: ACL, Callsign: Admire, IATA Prefix: 543, Founded in 1997 | CO | AVCODES |
| 1683 | JK | Jászkun Volán | | H | TRAFFIC |
| 1684 | JK | Johannes Klinger GmbH u. Co. KG Heide | | DE | VKM |
| 1685 | JKA | Letiurneau University, School of Aeronautical Science | Callsign: Jacket, | USA | AVCODES |
| 1686 | JKAM | JOHNSON, KAMMY | | | SCAC4 |
| 1687 | JKBK | JACK B TRUCKING | | | SCAC4 |
| 1688 | JKBX | John Kenneth Burbridge | 7/2000-7/2005 (not listed) | | NAKINA |
| 1689 | JKBX | John Kenneth Burbridge | Jul-00 | | NRHS |
| 1690 | JKBX | JOHN KENNETH BURBRIDGE | | | PWRC |
| 1691 | JKBX | John Kenneth Burbridge | | | RSRV |
| 1692 | JKCA | JKC TRUCKING INC (OVER THE ROAD DIV | | | SCAC4 |
| 1693 | JKCC | JHARNA-KALA CARD CO | | | SCAC4 |
| 1694 | JKCE | JENKINS TRUCKING LLC | | | SCAC4 |
| 1695 | JKCF | JKC TRUCKING INC | | | SCAC4 |
| 1696 | JKCN | JKC ENTERPRISES INC | | | SCAC4 |
| 1697 | JKCO | J & K SALVAGE | | | SCAC4 |
| 1698 | JKCS | JOHNSON, K C & SONS INC | | | SCAC4 |
| 1699 | JKCT | JKC TRANSPORT INC | | | SCAC4 |
| 1700 | JKCX | Jarecki Chemical Co. | 7/1923 | | NAKINA |
