| 1 | TPD | Top Speed Verband der Allgemeinen Lugtahrt Osterreich | Callsign: Top Speed, | A | AVCODES |
| 2 | TPD | Top Speed | | | ICAO1 |
| 3 | TPDA | TRANSPORTATION DATA INC. | | | SCAC4 |
| 4 | TPDE | TRIPLE D EXPRESS INC | | | SCAC4 |
| 5 | TPDL | TOPLAND TRUCKING INC | | | SCAC4 |
| 6 | TPDM | TRANSPORTADORES MARTINEZ S A DE C V | | | SCAC4 |
| 7 | TPDO | TORPEDO TRANSPORT CORPORATION | | | SCAC4 |
| 8 | TPDP | TRANSPORTES PADILLA | | | SCAC4 |
| 9 | TPDR | TECHNICRAFT PRODUCT DESIGN INC | | | SCAC4 |
| 10 | TPDT | TRANSPORTES RAPIDOS INTERANCIONALES | | | SCAC4 |
| 11 | TPDV | TOTAL PRODUCT DESTRUCTION LLC | | | SCAC4 |
| 12 | TPDX | Tennessee Products Corp. | 7/1937-4/1947 | | NAKINA |
| 13 | TPDX | Tennessee Products & Chemical Corp. | 1/1950-7/1954; eliminated 4/1957 | | NAKINA |
| 14 | TPDX | Union Tank Car Co. | added 4/1957; 10/1957-4/1970; eliminated 7/1973 | | NAKINA |
| 15 | TPDX | Tennessee Products Corp. | Apr-38 | | NRHS |
| 16 | TPDX | Tennessee Products & Chemical Corp. | 1/52; eliminated 4/57 | | NRHS |
| 17 | TPDX | Union Tank Car Co. | added 4/57; 10/57-4/70; eliminated 7/73 | | NRHS |
| 18 | TPDX | UNION TANK CAR CO. (TENNESSEE PRODUCTS & CHEMICAL CORP.) | | | PWRC |
| 19 | TPDX | TTX COMPANY | | | SCAC4 |
