| 1 | SPT | Bengis Aviation (Pty) Ltd d/b/a Sprint Airlines | Callsign: Sprint, | ZA | AVCODES |
| 2 | SPT | Simeron Enterprises | Callsign: Sim-Enterprises, | AM | AVCODES |
| 3 | SPT | Servicio Superior Ejecutivo S.A. de C.V. | Callsign: Servicios Sup, | MEX | AVCODES |
| 4 | SPT | Speed Aviation | | | ICAO1 |
| 5 | SPT | SOUTHERN PACIFIC TRANSPORT COMPANY | | | SCAC4 |
| 6 | SPT | Strathclyde Partnership for Transport | City: Glasgow | GB | TRAFFIC |
| 7 | SPTB | SPRINT TRANS BG INC | | | SCAC4 |
| 8 | SPTC | SPIRIT CARRIERS INC | | | SCAC4 |
| 9 | SPTE | Strathclyde Passenger Transport Executive | | GB | TRAFFIC |
| 10 | SPTF | SPITFIRE HOLDINGS | | | SCAC4 |
| 11 | SPTG | SOUTHCOAST PRIORITY TRUCKING A DIVI | | | SCAC4 |
| 12 | SPTH | SAMAR PRODUCT TANKER CORPORATION | | | SCAC4 |
| 13 | SPTI | SPAETH TRANSFER INC | | | SCAC4 |
| 14 | SPTK | SOUTHERN PINES TRUCKING INC | | | SCAC4 |
| 15 | SPTM | SANDY PINES TRUCKING INC | | | SCAC4 |
| 16 | SPTN | SHARP TRUCKING INC | | | SCAC4 |
| 17 | SPTT | SPIRIT TRANSPORTATION, INC | | | SCAC4 |
| 18 | SPTU | SCHENK-PAPENDRECHT BV | | NL | BIC |
| 19 | SPTU | SCHENK PAPENDRECHT DV | | | SCAC4 |
| 20 | SPTW | SPECIAL DISTRIBUTION TENNESSEE LLC | | | SCAC4 |
| 21 | SPTX | Sugar Products Co. | 8/1920 | | NAKINA |
| 22 | SPTX | Transcisco Leasing Co. | added 4/1993; eliminated 7/1993; 1/1994 (not listed) | | NAKINA |
| 23 | SPTX | Trinity Rail Management, Inc. | added 7/1997; 7/2000-7/2005 | | NAKINA |
| 24 | SPTX | Transcisco Leasing Co. | added 4/93; eliminated 7/93; 1/94 | | NRHS |
| 25 | SPTX | Trinity Rail Management, Inc. | added 7/97; 7/2000 | | NRHS |
| 26 | SPTX | *SUGAR PRODUCTS CO. | | | PWRC |
| 27 | SPTX | +TRINITY RAIL MANAGEMENT INC. [(MCHX) TRANSCISCO LEASING COMPANY] | | | PWRC |
| 28 | SPTX | Trinity Rail Management | | | RSRV |
| 29 | SPTX | TRINITY RAIL MANAGEMENT | | | SCAC4 |
| 30 | SPTZ | UNION PACIFIC RAILROAD [SOUTHERN PACIFIC TRANSP CO] | | | PWRC |
| 31 | SPTZ | Southern Pacific Railroad (Union Pacific Railroad) | | | RSRV |
| 32 | SPTZ | UNION PACIFIC RAILROAD COMPANY | | | SCAC4 |
