| 7701 | TPKX | Tracy Produce Co. | 7/1932-7/1935 | | NAKINA |
| 7702 | TPKX | TRACY PRODUCE CO. | | | PWRC |
| 7703 | TPL | Tar Interpilot | Callsign: Interpilot, | RIM | AVCODES |
| 7704 | TPL | Aeropool d/b/a Turbopool Ltd. | Callsign: Aeropool, | GB | AVCODES |
| 7705 | TPL | Turbopool Ltd. | Callsign: Aeropool, | GB | AVCODES |
| 7706 | TPL | TAR Interpilot | | | ICAO1 |
| 7707 | TPL | Texas and Pacific Ry. Co. | 1/1975; eliminated 1/1977 | | NAKINA |
| 7708 | TPL | Missouri Pacific R.R. Co. | added 1/1977; 1/1980 | | NAKINA |
| 7709 | TPL | Missouri Pacific System | eliminated 1/1981 | | NAKINA |
| 7710 | TPL | Texas and Pacific Ry. Co. | 1/75; eliminated 1/77 | | NRHS |
| 7711 | TPL | Missouri Pacific R.R. Co. | added 1/77; 1/80 | | NRHS |
| 7712 | TPL | Missouri Pacific System | eliminated 1/81 | | NRHS |
| 7713 | TPL | MISSOURI PACIFIC SYSTEM [TEXAS & PACIFIC RWY. CO.] | | | PWRC |
| 7714 | TPL | Toplivo PLC / Топливо АД | | BG | VKM |
| 7715 | TPLC | TWIN PEAKS LOGISTICS LLC | | | SCAC4 |
| 7716 | TPLD | TOP LOAD LLC | | | SCAC4 |
| 7717 | TPLE | TRIPLE-E MACHINERY MOVING, INC | | | SCAC1 |
| 7718 | TPLE | TRIPLE-E MACHINERY MOVING INC | | | SCAC4 |
| 7719 | TPLF | TRANSPORTES PASILLAS E HIJOS | | | SCAC4 |
| 7720 | TPLG | TRANSPORT LEASING INC | | | SCAC4 |
| 7721 | TPLH | TRIPLE L | | | SCAC4 |
| 7722 | TPLJ | TRANSPORT LODOS EXPRESS INC | | | SCAC4 |
| 7723 | TPLL | THREE (3) PLUS LOGISTICS | | | SCAC4 |
| 7724 | TPLM | TRANSPORTES LUMAGO | | | SCAC4 |
| 7725 | TPLN | TOP LINE EXPRESS INC | | | SCAC4 |
| 7726 | TPLODZ | Tramwaje Podmiejskie | City: Lodz | PL | TRAFFIC |
| 7727 | TPLP | TRANSPORTES LEE PINTADO S A DE C V | | | SCAC4 |
| 7728 | TPLX | Pacific Lumber Co. | 1/1943-7/1954; eliminated 7/1955 | | NAKINA |
| 7729 | TPLX | American Refrigerator Transit Co. | added 1/1963; 7/1965-4/1970; eliminated 10/1974; 1/1975-1/1980 | | NAKINA |
| 7730 | TPLX | Pacific Lumber Co. | 1/52; eliminated 7/55 | | NRHS |
| 7731 | TPLX | American Refrigerator Transit Co. | 7/65-4/70; eliminated 10/74; 1/75-1/80 | | NRHS |
| 7732 | TPLX | *PACIFIC LUMBER CO. | | | PWRC |
| 7733 | TPLX | *AMERICAN REFRIGERATOR TRANSIT CO. | | | PWRC |
| 7734 | TPLX | Trans-Pacific Lines | | | RSRV |
| 7735 | TPLZ | TRANS-PACIFIC LINES | | | SCAC4 |
| 7736 | TPM | Transpais Aereo, S.A. de C.V. | Callsign: Transpias, | MEX | AVCODES |
| 7737 | TPM | Transpais Aereo | | | ICAO1 |
| 7738 | TPMA | TANDEM PETROLEUM MARKETERS INC | | | SCAC4 |
| 7739 | TPMD | TRANSPORT PIERRE MENARD | | | SCAC4 |
| 7740 | TPME | TRANSPORT MAGOG EXPRESS (1982) INC | | | SCAC4 |
| 7741 | TPMG | TRANSPORTATION MANAGEMENT SERVICES | | | SCAC4 |
| 7742 | TPMJ | TOPMAN SHIPPING LTD | | | SCAC4 |
| 7743 | TPML | TRANS-PRO LOGISTIC INC | | | SCAC4 |
| 7744 | TPMN | TRANSPORTES MARTINEZ | | | SCAC4 |
| 7745 | TPMP | Texas Pacific-Missouri Pacific Terminal R.R. of New Orleans | 1/1975; eliminated 4/1978 | | NAKINA |
| 7746 | TPMP | Texas Pacific-Missouri Pacific Terminal R.R. of New Orleans | 1/75; eliminated 4/78 | | NRHS |
| 7747 | TPMP | TEXAS PACIFIC-MISSOURI PACIFIC TERMINAL RAILROAD OF NEW ORLEANS | | | PWRC |
| 7748 | TPMP | TRANS POWER CORPORATION OF | | | SCAC4 |
| 7749 | TPMR | TRANSPORTES MAR | | | SCAC4 |
| 7750 | TPMS | TRIPLE M TRANSPORT INC | | | SCAC4 |
| 7751 | TPMT | TRANSPORT MADIGAN TRUCKING INC | | | SCAC4 |
| 7752 | TPMU | EXSIF WORLDWIDE | | USA | BIC |
| 7753 | TPMU | EXSIF Worldwide | | | RSRV |
| 7754 | TPMU | TPI EQUIPMENT MANAGEMENT LIMITED | | | SCAC4 |
| 7755 | TPMW | TANKER PACIFIC MANAGEMENT (SINGAPOR | | | SCAC4 |
| 7756 | TPMY | TRANSPORTES PORRAS | | | SCAC4 |
| 7757 | TPN | Transportacion Aerea Del Norte, S.A. de C.V. | Callsign: Aerea Delnorte, | MEX | AVCODES |
| 7758 | TPN | Transportacion Aerea del Norte | | | ICAO1 |
| 7759 | TPN | Transports Publics Neuchâtelois | | CH | TRAFFIC |
| 7760 | TPNB | TRANSPORT N B S | | | SCAC4 |
| 7761 | TPNC | TRANSPORT N SERVICE INC | | | SCAC4 |
| 7762 | TPNG | TERPENING TRUCKING CO INC | | | SCAC4 |
| 7763 | TPNI | TRANSPORTATION INCORPORATED | | | SCAC4 |
| 7764 | TPNJ | TRANSPORTES CISNEROS | | | SCAC4 |
| 7765 | TPNN | TEPER TRANSPORTATION INC | | | SCAC4 |
| 7766 | TPNQ | TOP LINE TRUCKING INC | | | SCAC4 |
| 7767 | TPNR | TELESCOPES NORMAND FULLUM | | | SCAC4 |
| 7768 | TPNY | THORPE & SONS TRANSPORTATION | | | SCAC4 |
| 7769 | TPO | Aero Taxi Del Potosi, S.A. | Callsign: Taxi-potosi, | MEX | AVCODES |
| 7770 | TPO | Aero Taxi del Potosi | | | ICAO1 |
| 7771 | TPOB | TOPAD SYSTEMS INT INC | | | SCAC4 |
| 7772 | TPOE | TRANSPOEMPAQ | | | SCAC4 |
| 7773 | TPOG | TRANSPORTES GOGUE | | | SCAC4 |
| 7774 | TPOH | TRANSPORT 117 INC | | | SCAC4 |
| 7775 | TPOK | T F G TRANSPORT LLC | | | SCAC4 |
| 7776 | TPOL | TRANSPORTES OLMOS | | | SCAC4 |
| 7777 | TPOM | TRANSPORTES ONE (1) DE MAYO | | | SCAC4 |
| 7778 | TPON | TEMPO TRANSPORT INC | | | SCAC4 |
| 7779 | TPOO | TRANSPORT ONE INC | | | SCAC4 |
| 7780 | TPOP | TRANSPORTE POSADAS | | | SCAC4 |
| 7781 | TPOR | TRANSPORT PIERRE POIRIER INC | | | SCAC4 |
| 7782 | TPOS | TRES-PORT EXPRESS INC | | | SCAC4 |
| 7783 | TPOT | TRANSPORTES ORTIZ GARZA | | | SCAC4 |
| 7784 | TPOU | TRANS-PORTS S A | | | SCAC4 |
| 7785 | TPOX | Portola Oil Co. | 8/1920 | | NAKINA |
| 7786 | TPOX | PORTOLA OIL CO. | | | PWRC |
| 7787 | TPOY | TRANSPORT PETIT ONE NINE NINE SEVEN | | | SCAC4 |
| 7788 | TPP | Transpax Expres PTY Ltd. | Callsign: Trans Express, | AUS | AVCODES |
| 7789 | TPP | Transpac Express | | | ICAO1 |
| 7790 | TPP | Tranvia Pinerolo-Perosa Argentina | | I | TRAFFIC |
| 7791 | TPPB | TRANSPORT PASCAL POIRIER | | | SCAC4 |
| 7792 | TPPBD | TEЦ Bobov dol-EAД | | BG | VKM |
| 7793 | TPPC | TRANSPORTADORA PUREPECHA SA DE CV | | | SCAC4 |
| 7794 | TPPD | TRANSPORTES PIGA SA DE CV | | | SCAC4 |
| 7795 | TPPF | TRIPP FUEL LLC | | | SCAC4 |
| 7796 | TPPG | TRAPPERS TRANSPORT LTD | | | SCAC4 |
| 7797 | TPPH | TRANSPLACE INTERNATIONAL INC | | | SCAC4 |
| 7798 | TPPI | TRANSPORT PAPINEAU INTERNATIONAL INC | | | SCAC1 |
| 7799 | TPPI | TEXANA PICKLE PRODUCERS INC | | | SCAC4 |
| 7800 | TPPJ | TREPPEL GROUP LLC, THE | | | SCAC4 |
