| 10701 | STIX | +SOUTHERN TIMBER CORP. | | | PWRC |
| 10702 | STIX | SOUTHERN TIMBER CORPORATION | | | SCAC4 |
| 10703 | STIY | STAR TANK LINES INC | | | SCAC4 |
| 10704 | STIZ | STINSON INDUSTRIES | | | PWRC |
| 10705 | STJ | Stella Aviation | Callsign: Stellavia, | NL | AVCODES |
| 10706 | STJ | Emper General Aviation (Suzhou) Co., Ltd. | Callsign: Kingsman, | PRC | AVCODES |
| 10707 | STJ | Sella Aviation | | | ICAO1 |
| 10708 | STJA | S T WAREHOUSING INC | | | SCAC4 |
| 10709 | STJJ | SUPER TRANSPORT | | | SCAC4 |
| 10710 | STJK | STRICKLAND TRUCKING INC | | | SCAC4 |
| 10711 | STJL | STINE TRUCKING | | | SCAC4 |
| 10712 | STJM | ST JAMES TRANSPORTS LLC | | | SCAC4 |
| 10713 | STJO | STRUCTURES ST-JOSEPH LTE | | | SCAC4 |
| 10714 | STJP | STRANGES, JOSEPH P | | | SCAC4 |
| 10715 | STJQ | ST JACQUES TRANSPORTATION SERVICES | | | SCAC4 |
| 10716 | STJU | CAI INTERNATIONAL | | USA | BIC |
| 10717 | STJX | Stone Container (Canada) Inc. | 7/2000-7/2005 (not listed) | | NAKINA |
| 10718 | STJX | Stone Container (Canada) Inc. | Jul-00 | | NRHS |
| 10719 | STJX | STONE CONTAINER (CANADA) INC. | | | PWRC |
| 10720 | STJX | Stone Container Canada | | | RSRV |
| 10721 | STK | Aeropac | Callsign: Sat Pak, | USA | AVCODES |
| 10722 | STK | Stobart Air (Comhforbairt Gaillimh) | IATA: RE, Callsign: Stobart, Ceased operations on 12 June 2021. Name changed from Cornharbairl Gaillimh Teo d/b/a Aer Arann. ICAO designator changed from REA w.e.f. 04 August 2014. Operates as Aer Arann Express. Designator RE reinstated by IATA | IRL | AVCODES |
| 10723 | STK | Aeropac | | | ICAO1 |
| 10724 | STK | STK S.A. | | PL | VKM |
| 10725 | STKA | STOCKTON AG TRANSPORT | | | SCAC4 |
| 10726 | STKC | STANDARD TRUCKING CORPORATION | | | SCAC4 |
| 10727 | STKE | STARKE, LARRY B | | | SCAC4 |
| 10728 | STKF | STOCKTON FUEL OIL CO INC | | | SCAC4 |
| 10729 | STKG | SCHWERMAN TRUCKING CO | | | SCAC4 |
| 10730 | STKJ | STAR FISH INC | | | SCAC4 |
| 10731 | STKK | STOCKMYER TRUCKING INC | | | SCAC4 |
| 10732 | STKM | SUNTEK MANUFACTURING TECHNOLOGIES S | | | SCAC4 |
| 10733 | STKN | STOCKMAN TRANSFER INC | | | SCAC4 |
| 10734 | STKQ | SOUTHERN TANK LINES LLC | | | SCAC4 |
| 10735 | STKT | SUNTECK TRANSPORT CARRIERS INC | | | SCAC4 |
| 10736 | STKU | SANTOKU CHEMICAL INDUSTRIES CO. LTD | | J | BIC |
| 10737 | STKV | SPIRIT TRANSPORT SYSTEMS INC | | | SCAC4 |
| 10738 | STKX | STRICKLAND TRADING, INC. | | | PWRC |
| 10739 | STKX | LUCENT POLYMERS INC | | | SCAC4 |
| 10740 | STL | Stapleford Flight Centre | Callsign: Stapleford, | GB | AVCODES |
| 10741 | STL | Stapleford Flight Centre | | | ICAO1 |
| 10742 | STL | Seatrain Lines, Inc. | 1/1975-1/1980 | | NAKINA |
| 10743 | STL | Seatrain Lines, Inc., Container Division | eliminated 4/1981 | | NAKINA |
| 10744 | STL | Seatrain Lines, Inc. | 1/75-1/80 | | NRHS |
| 10745 | STL | Seatrain Lines, Inc., Container Division | eliminated 4/81 | | NRHS |
| 10746 | STL | SEATRAIN LINES, INC. | | | PWRC |
| 10747 | STLB | STERLING TRANSPORTATION | | | SCAC4 |
| 10748 | STLB | Steiermärkische Landesbahnen | | A | TRAFFIC |
| 10749 | STLB | Steiermärkische Landesbahnen | | AT | VKM |
| 10750 | STLBM | The St. Louis, Brownsville & Mexico Ry. (Gulf Coast Lines) | Real: SBM | USA | TRAFFIC |
| 10751 | STLC | S T L TRANSPORT INC | | | SCAC4 |
| 10752 | STLD | SEARCY TRUCKING LTD | | | SCAC4 |
| 10753 | STLE | St. Louis & Evansville Railroad Co. | | | RSRV |
| 10754 | STLE | SEATRADERS | | | SCAC1 |
| 10755 | STLE | SEA TRADERS LINE INC | | | SCAC4 |
| 10756 | STLF | ST LAWRENCE FREIGHTWAYS INC | | | SCAC4 |
| 10757 | STLG | STONEHAVEN LOGISTICS LLC | | | SCAC4 |
| 10758 | STLH | St. Lawrence & Hudson Ry. Co. Ltd. | 7/2000-7/2005 | | NAKINA |
| 10759 | STLH | St. Lawrence & Hudson Ry. Co. Ltd. | Jul-00 | | NRHS |
| 10760 | STLH | ST. LAWRENCE & HUDSON RAILWAY CO. LTD. | | | PWRC |
| 10761 | STLH | St. Lawrence and Hudson Railway (Canadian Pacific Railway) | | | RSRV |
| 10762 | STLH | ST LAWRENCE & HUDSON RAILWAY COMPAN | | | SCAC4 |
| 10763 | STLH | St. Lawrence & Hudson Railway Company Limited | | USA | TRAFFIC |
| 10764 | STLK | National Rail Corporation - SteelLink | Real: SL ? | AUS | TRAFFIC |
| 10765 | STLM | STEALTH MAYFLOWER LLC | | | SCAC4 |
| 10766 | STLO | STOUGHTON LOGISTICS LLC | | | SCAC4 |
| 10767 | STLQ | STEEL MOBILA | | | SCAC4 |
| 10768 | STLS | SAPPHIRE TRANSPORT LOGISTICS LLC | | | SCAC4 |
| 10769 | STLT | SHERGILL TRANSPORT LLC | | | SCAC4 |
| 10770 | STLU | SHIPPING TRADING &LIGHTERAGE CO (STALCO) | | UAE | BIC |
| 10771 | STLU | (STL) MATSON NAVIGATION CO. | | | PWRC |
| 10772 | STLU | Matson Navigation | | | RSRV |
| 10773 | STLX | Sherbrooke Tank Line | 8/1920 | | NAKINA |
| 10774 | STLX | Stauffer Chemical Co. (Southern California Branch) | 7/1930-7/1954; eliminated 7/1956 | | NAKINA |
| 10775 | STLX | A.E. Staley Manufacturing Co. | added 4/1980; 1/1994-7/2000; eliminated 4/2005 | | NAKINA |
| 10776 | STLX | Tate & Lyle Ingredients Americas, Inc. | added 4/2005; 7/2005 | | NAKINA |
| 10777 | STLX | Stauffer Chemical Co. (Southern California Branch) | 4/38-1/52; eliminated 7/56 | | NRHS |
| 10778 | STLX | A.E. Staley Manufacturing Co. | added 4/80; 1/94-7/2000 | | NRHS |
| 10779 | STLX | *SHERBROOKE TANK LINE | | | PWRC |
| 10780 | STLX | *STAUFFER CHEMICAL CO., SOUTHERN CALIFORNIA BRANCH | | | PWRC |
| 10781 | STLX | +TATE & LYLE INGREDIENTS AMERICAS, INC. [A. E. STALEY MFG. CO.] | | | PWRC |
| 10782 | STLX | A. E. Staley Manufacturing | | | RSRV |
| 10783 | STLX | TATE & LYLE INGREDIENTS AMERICAS IN | | | SCAC4 |
| 10784 | STLZ | (STL) MATSON NAVIGATION CO. | | | PWRC |
| 10785 | STLZ | Matson Navigation | | | RSRV |
| 10786 | STM | Sociedad Anonima Empresa de Turismo Aerec | Callsign: Saetura, | YV | AVCODES |
| 10787 | STM | Streamline Aviation Ltd. | Callsign: Streamline, ICAO designator changed to SSW | GB | AVCODES |
| 10788 | STM | Star Airlines | Callsign: Starmac, Founded 2008 | MK | AVCODES |
| 10789 | STM | Skystream Airlines AS | Callsign: Skystream, | EST | AVCODES |
| 10790 | STM | Société de transport de Montréal | City: Montréal | CDN | TRAFFIC |
| 10791 | STMA | St. Maries River R.R. Co. | added 10/1980; 1/1994-7/2005 | | NAKINA |
| 10792 | STMA | St. Maries River R.R. Co. | added 10/80; 1/94-7/2000 | | NRHS |
| 10793 | STMA | ST. MARIES RIVER RAILROAD CO. | | | PWRC |
| 10794 | STMA | St. Maries River Railroad | | | RSRV |
| 10795 | StMB | Steinhuder Meer-Bahn eV | Wunstorf | D | privat-bahn.de |
| 10796 | STMB | STRIMBU TRANSPORT INC | | | SCAC4 |
| 10797 | STMB | Steinhuder Meer-Bahn | | D | TRAFFIC |
| 10798 | STMC | SERVTRANS MENTENANCE SA | | RO | VKM |
| 10799 | STME | STUTSMAN, ELDON C INC | | | SCAC4 |
| 10800 | STMG | STALLMAN TRUCKING | | | SCAC4 |
