| 7501 | TPBX | General American Transportation Corporation (GATX) | | | RSRV |
| 7502 | TPC | Air Caledonie | IATA: TY, Callsign: Aircal, IATA Prefix: 190, Designator TY reinstated by IATA | NC | AVCODES |
| 7503 | TPC | Air Calédonie | IATA: TY | | ICAO1 |
| 7504 | TPC | Transports Publics du Chablais | | CH | TRAFFIC |
| 7505 | TPC | Transports Publics du Chablais SA | | CH | VKM |
| 7506 | TPCA | TRIPLE C HAULING | | | SCAC4 |
| 7507 | TPCC | TPC KOREA CO LTD | | | SCAC4 |
| 7508 | TPCD | TOP CROP APPLICATORS INC | | | SCAC4 |
| 7509 | TPCF | EPIC EXPRESS, A Division of Transport CFQI, INC | | | SCAC1 |
| 7510 | TPCF | TRANSPORT CAR-FRE LTEE | | | SCAC4 |
| 7511 | TPCF | TPCF, Train du Pays Cathare et du Fenouillèdes | | FR | VKM |
| 7512 | TPCG | TOKIWA, PAUL CARTAGE LIMITED | | | SCAC4 |
| 7513 | TPCI | TRANSCORP CARRIERS INC | | | SCAC4 |
| 7514 | TPCL | TROPIC OIL COMPANY | | | SCAC4 |
| 7515 | TPCN | TRANSPORT CONTINENTAL INC | | | SCAC4 |
| 7516 | TPCO | TRANSPORT CONTINENTAL | | | SCAC4 |
| 7517 | TPCP | TRANSPORTES CAMPOS | | | SCAC4 |
| 7518 | TPCQ | TRANSPORT PATT CHABOT | | | SCAC4 |
| 7519 | TPCR | TRIPLE C TRANSPORTATION | | | SCAC4 |
| 7520 | TPCS | TRANS-PACIFIC LINES, LTD. | | | SCAC1 |
| 7521 | TPCU | WAN HAI LINES LTD | | RC | BIC |
| 7522 | TPCU | TRANSPACIFIC LINES | | | SCAC4 |
| 7523 | TPCW | TRANSPRO COURIER INCORPORATED | | | SCAC4 |
| 7524 | TPCX | The Palmolive Co. | 8/1920-7/1932 | | NAKINA |
| 7525 | TPCX | The Palmolive Co. (Colgate-Palmolive-Peet Co.) | 7/1935 | | NAKINA |
| 7526 | TPCX | Colgate-Palmolive-Peet Co. | 7/1937-1/1952; eliminated 1/1953 | | NAKINA |
| 7527 | TPCX | Taylor-Colquitt Co. | eliminated 1/1961 | | NAKINA |
| 7528 | TPCX | The Purdy Co. | added 7/1972; 1/1975-1/1980; eliminated 1/1990 | | NAKINA |
| 7529 | TPCX | Colgate-Palmolive-Peet Co. | 4/38-1/52; eliminated 1/53 | | NRHS |
| 7530 | TPCX | The Purdy Co. | 1/75-1/80; eliminated 1/90 | | NRHS |
| 7531 | TPCX | *COLGATE-PALMOLIVE-PEET CO. | | | PWRC |
| 7532 | TPCX | *TAYLOR-COLQUITT CO. | | | PWRC |
| 7533 | TPCX | *PURDY CO. | | | PWRC |
| 7534 | TPCX | The Purdy Co. (Trademark Plastics Corp) | | | RSRV |
| 7535 | TPCX | TRADEMARK PLASYICS CORPORATION | | | SCAC4 |
| 7536 | TPCY | TRANS-PORC GUY LEDUC INC | | | SCAC4 |
| 7537 | TPCZ | TIPHOOK CONTAINER RENTAL COMPANY LIMITED | | | PWRC |
| 7538 | TPCZ | Tiphook Container Rental Limited | | | RSRV |
| 7539 | TPCZ | TIPHOOK CONTAINER RENTAL COMPANY LT | | | SCAC4 |
| 7540 | TPCZ | TransPlus (Česko) | | CZ | VKM |
| 7541 | TPD | Top Speed Verband der Allgemeinen Lugtahrt Osterreich | Callsign: Top Speed, | A | AVCODES |
| 7542 | TPD | Top Speed | | | ICAO1 |
| 7543 | TPDA | TRANSPORTATION DATA INC. | | | SCAC4 |
| 7544 | TPDE | TRIPLE D EXPRESS INC | | | SCAC4 |
| 7545 | TPDL | TOPLAND TRUCKING INC | | | SCAC4 |
| 7546 | TPDM | TRANSPORTADORES MARTINEZ S A DE C V | | | SCAC4 |
| 7547 | TPDO | TORPEDO TRANSPORT CORPORATION | | | SCAC4 |
| 7548 | TPDP | TRANSPORTES PADILLA | | | SCAC4 |
| 7549 | TPDR | TECHNICRAFT PRODUCT DESIGN INC | | | SCAC4 |
| 7550 | TPDT | TRANSPORTES RAPIDOS INTERANCIONALES | | | SCAC4 |
| 7551 | TPDV | TOTAL PRODUCT DESTRUCTION LLC | | | SCAC4 |
| 7552 | TPDX | Tennessee Products Corp. | 7/1937-4/1947 | | NAKINA |
| 7553 | TPDX | Tennessee Products & Chemical Corp. | 1/1950-7/1954; eliminated 4/1957 | | NAKINA |
| 7554 | TPDX | Union Tank Car Co. | added 4/1957; 10/1957-4/1970; eliminated 7/1973 | | NAKINA |
| 7555 | TPDX | Tennessee Products Corp. | Apr-38 | | NRHS |
| 7556 | TPDX | Tennessee Products & Chemical Corp. | 1/52; eliminated 4/57 | | NRHS |
| 7557 | TPDX | Union Tank Car Co. | added 4/57; 10/57-4/70; eliminated 7/73 | | NRHS |
| 7558 | TPDX | UNION TANK CAR CO. (TENNESSEE PRODUCTS & CHEMICAL CORP.) | | | PWRC |
| 7559 | TPDX | TTX COMPANY | | | SCAC4 |
| 7560 | TPE | Transportes Peninsulares Terrestres Aereos Y Maritimos S.A. de C.V. | Callsign: Transpen, | MEX | AVCODES |
| 7561 | TPE | First TransPennine Express | First TransPennine Express (TPE) is a train operating company in the United Kingdom. It operates regular regional services in the north of England. The franchise has been granted for eight years to a joint operation by First Group and Keolis, with an optional extension of five years. It was created by removing the long-distance routes previously operated by Arriva Trains Northern and First North Western and merging them into a single franchise. From 10th December 2004, TransPennine Express changed its name to First TransPennine Express. | GB | TRAFFIC |
| 7562 | TPED | TRIPLE I PRESS LLC | | | SCAC4 |
| 7563 | TPEG | TRIPLE G TRUCKING | | | SCAC4 |
| 7564 | TPEI | TRI-POL ENTERPRISES INC | | | SCAC4 |
| 7565 | TPEK | TRANSPORT EXPRESS LLC | | | SCAC4 |
| 7566 | TPEL | TRANSPORTES LEO | | | SCAC4 |
| 7567 | TPEO | TRANSPORTES PESO | | | SCAC4 |
| 7568 | TPER | TRANSPORTES E RAMIREZ | | | SCAC4 |
| 7569 | TPER | Transporto Passeggeri Emilia-Romagna | | I | TRAFFIC |
| 7570 | TPERTH | Transperth | City: Perth | AUS | TRAFFIC |
| 7571 | TPET | TRANSPORT PIERRE SAVOIE INC | | | SCAC4 |
| 7572 | TPEV | TRANSPORTES ESTRADA | | | SCAC4 |
| 7573 | TPEX | General Electric Railcar Services Corp. | 1/1994-7/2000 | | NAKINA |
| 7574 | TPEX | General Electric Railcar Services Corp. | 1/94-7/2000 | | NRHS |
| 7575 | TPEX | (NATX) GENERAL ELECTRIC RAILCAR SERVICES CORPORATION | | | PWRC |
| 7576 | TPEX | General Electric Railcar Services Corporation | | | RSRV |
| 7577 | TPEX | TTX CPMPANY | | | SCAC4 |
| 7578 | TPEY | TRF PALLET INC | | | SCAC4 |
| 7579 | TPF | Taxis Aereos Del Pacifico, S.A. de C.V. | Callsign: Taxipacifico, | MEX | AVCODES |
| 7580 | TPF | Taxis Aereos del Pacifico | | | ICAO1 |
| 7581 | TPF | Transports publics Fribourgeois | City: Friburg | CH | TRAFFIC |
| 7582 | TPF | Transports publics fribourgeois | | CH | VKM |
| 7583 | TPFB | TRANSPORT FELIX BILODEAU INC | | | SCAC4 |
| 7584 | TPFC | TRANS-PROVINCIAL FREIGHT CARRIERS L | | | SCAC4 |
| 7585 | TPFE | TRANSPORT FRONTIERE ENR | | | SCAC4 |
| 7586 | TPFJ | TEXAS PRIDE FUELS LTD | | | SCAC4 |
| 7587 | TPFL | TRANSPORTES FLOSA | | | SCAC4 |
| 7588 | TPFN | TRANSPORTES FUENTES | | | SCAC4 |
| 7589 | TPFP | TPF ASSOCIATION INC | | | SCAC4 |
| 7590 | TPFQ | THREE PONDS FARM LTD | | | SCAC4 |
| 7591 | TPFR | TRANSPORTES FRONTERIZOS INC | | | SCAC4 |
| 7592 | TPFS | TRANSPORTES FRAPESA | | | SCAC4 |
| 7593 | TPFT | TOP FLIGHT TRANSPORTATION INC | | | SCAC4 |
| 7594 | TPFU | TPCO DEMOLITION | | F | BIC |
| 7595 | TPFV | TRANSPLACE INTERNATIONAL INC (FREIG | | | SCAC4 |
| 7596 | TPFX | North American Car Corp. | added 4/1973; 1/1975-1/1980; eliminated 1/1984 | | NAKINA |
| 7597 | TPFX | General Electric Railcar Services Corp. | added 1/1984; 1/1994; eliminated 1/2000 | | NAKINA |
| 7598 | TPFX | General Electric Rail Services Corp. | added 1/2000; 7/2000; eliminated 10/2001 | | NAKINA |
| 7599 | TPFX | North American Car Corp. | added 4/73; 1/75-1/80 | | NRHS |
| 7600 | TPFX | General Electric Railcar Services Corp. | 1/94; eliminated 1/2000 | | NRHS |
