| 3701 | KNLU | NEDLLOYD LINES | | | PWRC |
| 3702 | KNLU | Nedlloyd Lines | | | RSRV |
| 3703 | KNLU | KONINKLIJKE NEDLLOYD NV | | | SCAC3 |
| 3704 | KNLU | P & O NEDLLOYD BV | | | SCAC4 |
| 3705 | KNLW | KINDELL, LAWRENCE W | | | SCAC3 |
| 3706 | KNLY | KENNELL, LYLE TRUCKING | | | SCAC3 |
| 3707 | KNM | Komsomolsk-On-Amur Air Enterprise | Callsign: Knaapo, | RUS | AVCODES |
| 3708 | KNM | G B Helicopters Ltd. | Callsign: Kingdom, | GB | AVCODES |
| 3709 | KNM | Komsomolsk-on-Amur Air Enterprise | | | ICAO1 |
| 3710 | KNMA | KEN-MAR FARMS | | | SCAC3 |
| 3711 | KNMC | K & M TRUCKING COMPANY | | | SCAC3 |
| 3712 | KNMD | K & M DISTRIBUTORS INC | | | SCAC3 |
| 3713 | KNMF | KENSINGTON MANUFACTURING COMPANY | | | SCAC3 |
| 3714 | KNMI | KEN-MAR TRANSPORT INC | | | SCAC3 |
| 3715 | KNMI | KNIGHT MARITIME INC | | | SCAC4 |
| 3716 | KNMK | KENNEDY | | | SCAC4 |
| 3717 | KNML | KEN-MAC TRAILER TOWING LTD | | | SCAC3 |
| 3718 | KNMM | KINNEY, M M INC | | | SCAC3 |
| 3719 | KNMO | KEN-MOR STONE INC | | | SCAC3 |
| 3720 | KNMP | K & M TRANSPORTATION | | | SCAC3 |
| 3721 | KNMR | K N M TRANSPORT INC | | | SCAC4 |
| 3722 | KNMS | KING MOVING SYSTEMS, INC. | | | SCAC3 |
| 3723 | KNMT | KENNEDY, M TRUCKING INC | | | SCAC3 |
| 3724 | KNMT | K & M TRANSPORT INC | | | SCAC4 |
| 3725 | KNMV | KING MOVING & STORAGE | | | SCAC3 |
| 3726 | KNMV | KING MOVING & STORAGE INC | | | SCAC4 |
| 3727 | KNMZ | K & n MEATS CO. | | | PWRC |
| 3728 | KNNA | KENNA INC | | | SCAC3 |
| 3729 | KNNA | KENNA ENTERPRISES LIMITED | | | SCAC4 |
| 3730 | KNNE | KINNEY TRUCKING | | | SCAC3 |
| 3731 | KNNE | KENNEDY TRANSPORT SERVICES LLC | | | SCAC4 |
| 3732 | KNNG | KENNING TRANSPORT | | | SCAC4 |
| 3733 | KNNI | KUEHNE & NAGEL INTERNATIONAL LIMITE | | | SCAC4 |
| 3734 | KNNL | K&L TRUCKING, INC | | | SCAC3 |
| 3735 | KNNL | K & L TRUCKING | | | SCAC4 |
| 3736 | KNNR | KENNER TRANSPORTATION | | | SCAC3 |
| 3737 | KNNR | KENNARD TRUCKING | | | SCAC4 |
| 3738 | KNNS | KNICLEY, E L & SONS | | | SCAC3 |
| 3739 | KNNY | KENNYS TRUCKING CO INC | | | SCAC3 |
| 3740 | KNOB | KNOBLAUCH BROS | | | SCAC3 |
| 3741 | KNOC | KNOX CLEO INC | | | SCAC3 |
| 3742 | KNOF | KNOPF INTERNATIONAL INC | | | SCAC4 |
| 3743 | KNOI | KINGSPORT OIL CORP | | | SCAC3 |
| 3744 | KNOK | KNOCK TANKERS LTD | | | SCAC3 |
| 3745 | KNOK | KNOCK TANKERS LTD-BERMUDA | | | SCAC4 |
| 3746 | KNOL | KNOLL BROTHERS INC | | | SCAC4 |
| 3747 | KNOP | KING OCEAN CENTRAL AMERICA S A | | | SCAC3 |
| 3748 | KNOP | KING OCEAN CENTRAL AMERICA S A | | | SCAC4 |
| 3749 | KNOR | Klamath Northern Ry. Co. | 1/1975-1/1980 | | NAKINA |
| 3750 | KNOR | Klamath Northern Ry. Co. | 1/75-1/80 | | NRHS |
| 3751 | KNOR | KLAMATH NORTHERN RWY. CO. | | | PWRC |
| 3752 | KNOR | Klamath Northern Railway | | | RSRV |
| 3753 | KNOR | KLAMATH NORTHERN RAILWAY COMPANY | | | SCAC3 |
| 3754 | KNOS | KNOWLES, SUSAN E | | | SCAC3 |
| 3755 | KNOU | KUEHNE AND NAGEL OVERSEAS, INC. | | | SCAC3 |
| 3756 | KNOU | KUEHNE AND NAGEL OVERSEAS, INC. | | | SCAC4 |
| 3757 | KNOW | KENOCO | | | SCAC3 |
| 3758 | KNOW | KNOWLES, GEOFFREY | | | SCAC4 |
| 3759 | KNOX | Philip Metals, Inc. | added 4/2001; 7/2005 | | NAKINA |
| 3760 | KNOX | Knox Metals Corp. | added 1/1996; eliminated 4/1997; 7/2000 (not listed) | | NAKINA |
| 3761 | KNOX | Knox Metals Corp. | added 1/96; eliminated 4/97; 7/2000 | | NRHS |
| 3762 | KNOX | Philip Metals, Inc. | added 4/2001 | | NRHS |
| 3763 | KNOX | PHILLIPS METALS, INC. [KNOX METALS CORPORATION] | | | PWRC |
| 3764 | KNOX | Knox Metals (Philips Metals) | | | RSRV |
| 3765 | KNOX | PHILIP METALS INC | | | SCAC4 |
| 3766 | KNPB | KNAPP, BRIAN A | | | SCAC4 |
| 3767 | KNPD | KNICELEY, PHILLIP D TRUCKING | | | SCAC3 |
| 3768 | KNPE | KNAPPS EXPRESS, INC | | | SCAC3 |
| 3769 | KNPF | KNOPFEL, LEWIS JR | | | SCAC3 |
| 3770 | KNPI | KING TRANSPORTATION | | | SCAC4 |
| 3771 | KNPK | K & P TRUCKING CO INC | | | SCAC3 |
| 3772 | KNPM | KNAPP, H E, MOVING & STORAGE CO | | | SCAC3 |
| 3773 | KNPO | KNAPP OIL CO TRANSPORTS INC | | | SCAC3 |
| 3774 | KNPO | KNAPP OIL CO TRANSPORTS INC | | | SCAC4 |
| 3775 | KNPP | KNEIPP ENTERPRISES INC | | | SCAC3 |
| 3776 | KNPR | KNIGHT TRANSPORT | | | SCAC3 |
| 3777 | KNQP | KINEQUIP INC | | | SCAC4 |
| 3778 | KNR | | | ROK | TRAFFIC |
| 3779 | KNRA | KENNY, RAY TRUCKING | | | SCAC3 |
| 3780 | KNRB | KONKLE, ROBERT TRUCKING | | | SCAC3 |
| 3781 | KNRD | KINARD TRUCKING ENTERPRISES LLC | | | SCAC4 |
| 3782 | KNRG | KINGFIELD RACING STABLE LTD | | | SCAC4 |
| 3783 | KNRI | KONKRIS TRUCKING INC | | | SCAC3 |
| 3784 | KNRI | KENNER, BRIAN GORDON | | | SCAC4 |
| 3785 | KNRK | KNIGHT RIDER TRUCKING INC | | | SCAC3 |
| 3786 | KNRO | KNECHT, ROSS TRUCKING | | | SCAC3 |
| 3787 | KNRO | KENNEY & ROSS LIMITED | | | SCAC4 |
| 3788 | KNRP | K & R TRANSPORTATION INC | | | SCAC3 |
| 3789 | KNRQ | K&R EXPRESS SYSTEMS, INC | | | SCAC3 |
| 3790 | KNRR | KNORR TRUCKING | | | SCAC3 |
| 3791 | KNRR | KNIGHT NORTHWEST REEFER SERVICES IN | | | SCAC4 |
| 3792 | KNRS | KERN, R & SON TRUCKING | | | SCAC4 |
| 3793 | KNRT | K & R TRUCK LINE | | | SCAC3 |
| 3794 | KNRW | K & R TRUCKING | | | SCAC3 |
| 3795 | KNRX | KINGWOOD NORTHERN RAILROAD | | | PWRC |
| 3796 | KNS | Kenuz Airlines Limited | Callsign: Kenuz, | WAN | AVCODES |
| 3797 | KNS | kinshasa Airways S.p.r.l. | Callsign: Kinshasa Airways, | ZRE | AVCODES |
| 3798 | KNS | Kinshasa Airways | | | ICAO1 |
| 3799 | KNSA | K & S TANK LINES INC | | | SCAC3 |
| 3800 | KNSA | KANSA TRANSPORT INC | | | SCAC4 |
