| 10601 | STFA | STEWART, FAYE TRANSPORTATION SERVIC | | | SCAC4 |
| 10602 | STFB | SWIFT TRANSPORTATION COMPANY INC (F | | | SCAC4 |
| 10603 | STFD | SPLIT TRANSFER CORP | | | SCAC4 |
| 10604 | STFE | SPEARS TRANSFER & EXPEDITING INC | | | SCAC4 |
| 10605 | STFG | SEA TANKERS FOUR (4) LTD | | | SCAC4 |
| 10606 | STFL | SIX TWO FIVE NINE THREE FOUR ONE (6 | | | SCAC4 |
| 10607 | STFM | STAR FARMS | | | SCAC4 |
| 10608 | STFN | STEFAN, J INC | | | SCAC4 |
| 10609 | STFO | SCC TRANSPORT LLC | | | SCAC4 |
| 10610 | STFP | STC | | | SCAC4 |
| 10611 | STFQ | STATE ROOFING INC | | | SCAC4 |
| 10612 | STFS | STRODE FARM SERVICE | | | SCAC4 |
| 10613 | STFU | BERENGER-FERMAUND | | | SCAC3 |
| 10614 | STFX | SEPARATION TECHNOLOGIES LLC | | | SCAC4 |
| 10615 | STFY | STEFFY'S TRANSFER | | | SCAC1 |
| 10616 | STFY | STORK LINE | | | SCAC4 |
| 10617 | STG | Sedalia, Marshall, Boonville Stage Line, Inc. | Callsign: Stage, | USA | AVCODES |
| 10618 | STG | Sedalia, Marshall, Boonville Stage Line | | | ICAO1 |
| 10619 | STG | SOUTHERN TIER STAGES INC | | | SCAC4 |
| 10620 | STGA | STAGELINE MOBILE STAGE INC | | | SCAC4 |
| 10621 | STGB | SET TO GO TRANSPORTATION LLC | | | SCAC4 |
| 10622 | STGBS | Stuttgarter Bahnservice Ltd. | | DE | VKM |
| 10623 | STGC | ST GEORGE COMPANY LIMITED, THE | | | SCAC4 |
| 10624 | STGE | SUNCHASE TRANSPORTATION GROUP | | | SCAC4 |
| 10625 | STGE | Stahl Gerlafingen AG | | D | TRAFFIC |
| 10626 | STGG | SPECIALIZED TRANSPORTATION AGENT GR | | | SCAC4 |
| 10627 | STGI | S T G TRANSPORT INC | | | SCAC4 |
| 10628 | STGL | SMITH TRANSPORT & LOGISTICS INC | | | SCAC4 |
| 10629 | STGN | STL LOGISTICS LLC | | | SCAC4 |
| 10630 | STGP | SOUTHEASTERN AG TRANSPORT INC | | | SCAC4 |
| 10631 | STGQ | STEAMBOAT CREEK TERMINALS INC | | | SCAC4 |
| 10632 | STGR | SEMGROUP ENERGY PARTNERS LLC | | | SCAC4 |
| 10633 | STGS | SCHMIDT, CALVIN | | | SCAC4 |
| 10634 | STGS | Miejski Zakład Komunikacji w Stargardzie Szczecińskim. | Until 31.12.2015 Miejski Zakład Komunikacji w Stargardzie Szczecińskim. Until 31.12.2017 Miejski Zakład Komunikacji w Stargardzie. From 1.01.2018 Miejskie Przedsiębiorstwo Komunikacji w Stargardzie | PL | TRAFFIC |
| 10635 | STGT | STERLING TRUCKING INC | | | SCAC4 |
| 10636 | STGU | SHOWA SPECIALTY GAS (TAIWAN) CO LTD | | RC | BIC |
| 10637 | STGU | GROUP-ST LTD | | | SCAC4 |
| 10638 | STGV | STERLING VAN LINES INC | | | SCAC4 |
| 10639 | STGX | South Texas Grain Co., Inc. | added 7/1991; 1/1994; eliminated 10/1997; 7/2000-7/2005 (not listed) | | NAKINA |
| 10640 | STGX | South Texas Grain Co., Inc. | added 7/91; 1/94; eliminated 10/97; 7/2000 | | NRHS |
| 10641 | STGX | SOUTH TEXAS GRAIN COMPANY, INC. | | | PWRC |
| 10642 | STGX | South Texas Grain | | | RSRV |
| 10643 | STGX | SOUTH TEXAS GRAIN COMPANY, INC. | | | SCAC4 |
| 10644 | STGY | ST GERMAIN WAREHOUSE CO INC | | | SCAC4 |
| 10645 | STGZ | STEPHENS GRAPHICS | | | PWRC |
| 10646 | STH | South-Airlines LLC | | AM | AVCODES |
| 10647 | STH | Southern Airlines Ltd. | | GB | AVCODES |
| 10648 | STH | RTE / STH | Callsign: Zeltron, | F | AVCODES |
| 10649 | STH | South-Airlines | | | ICAO1 |
| 10650 | STH | Stern & Hafferl | | A | TRAFFIC |
| 10651 | STH | Stern & Hafferl Verkehrsgesellschaft mbH | | AT | VKM |
| 10652 | STHB | Süd-Thüringen-Bahn | Real: STB | D | TRAFFIC |
| 10653 | STHC | SATHER TRUCKING COMPANY | | | SCAC4 |
| 10654 | STHD | SCIEMA TECHNICAL SERVICES LTD | | | SCAC4 |
| 10655 | STHEL | Stephenson's Helmsley | | GB | TRAFFIC |
| 10656 | STHF | STASH FUEL OIL INC | | | SCAC4 |
| 10657 | STHG | STRONGHURST GRAIN & | | | SCAC4 |
| 10658 | STHI | STONE, H I & SON INC | | | SCAC4 |
| 10659 | STHJ | ST NICHOLAS INC | | | SCAC4 |
| 10660 | STHK | Straußberg-Herzfelder Kleinbahn | near Berlin | D | TRAFFIC |
| 10661 | STHL | SOUTH-LAND FOODS INC | | | SCAC4 |
| 10662 | STHM | STROEHER & SON TRANSPORT CO INC | | | SCAC4 |
| 10663 | STHP | SOUTHWEST TRANSFER COMPANY | | | SCAC4 |
| 10664 | STHR | SOUTHERN CORROSION CONTROL LTD | | | SCAC4 |
| 10665 | STHS | STANDARD TRANSPORTATION SERVICES, INC | | | SCAC1 |
| 10666 | STHS | STANDARD TRANSPORTATION SERVICES IN | | | SCAC4 |
| 10667 | STHV | STARVIN MARVINS SEAFOODS | | | SCAC4 |
| 10668 | STHX | Stauffer Chemical Co. of Nevada | 7/1954; eliminated 7/1956 | | NAKINA |
| 10669 | STHX | Stauffer Chemical Co. of Nevada | eliminated 7/56 | | NRHS |
| 10670 | STHX | STAUFFER CHEMICAL CO. OF NEVADA | | | PWRC |
| 10671 | STI | Sontair Ltd. | Callsign: Sontair, | CDN | AVCODES |
| 10672 | STI | Sontair | | | ICAO1 |
| 10673 | STI | Verkehrsbetriebe STI (Steffisburg-Thun-Interlaken) | | CH | TRAFFIC |
| 10674 | STI | SERVTRANS INVEST S.A. | | RO | VKM |
| 10675 | STIB | | City: Bruxelles | B | TRAFFIC |
| 10676 | STIC | SCAN TRANS, INC | | | SCAC1 |
| 10677 | STID | STIDHAM TRUCKING INC | | | SCAC4 |
| 10678 | STIF | SANDERS TRANSPORTATION INC | | | SCAC4 |
| 10679 | STIH | STINGER EXPRESS | | | SCAC4 |
| 10680 | STII | S T SERVICES INC | | | SCAC4 |
| 10681 | STIJ | STI LLC | | | SCAC4 |
| 10682 | STIL | SERVICIO DE TRANSPORTE INTERNACIONA | | | SCAC4 |
| 10683 | STIM | STONE EXPERTS INC, THE | | | SCAC4 |
| 10684 | STIN | STINNES, HUGO SCHIFFAHRT GMBH | | | SCAC4 |
| 10685 | STIO | STERLING OIL & CHEMICAL CO | | | SCAC4 |
| 10686 | STIP | STEEL TRANSPORT INC | | | SCAC4 |
| 10687 | STIQ | S T I INC | | | SCAC4 |
| 10688 | STIS | STIMAN STEEL CO | | | SCAC4 |
| 10689 | STIT | SUPER TRANSPORTE INTERNACIONAL S A | | | SCAC4 |
| 10690 | STIU | ZAO STIM | | | SCAC4 |
| 10691 | STIV | SOUTHPAW TRANSPORTATION INC | | | SCAC4 |
| 10692 | STIX | Stauffer Chemical Co. of Indiana | 7/1930-7/1935 | | NAKINA |
| 10693 | STIX | Stauffer Chemical Co. — Eastern Branch | 7/1937-4/1938 | | NAKINA |
| 10694 | STIX | Stauffer Chemical Co. | 1/1941-1/1952; eliminated 7/1956 | | NAKINA |
| 10695 | STIX | Surface Transportation International, Inc. | added 4/1977; 1/1980; eliminated 4/1980 | | NAKINA |
| 10696 | STIX | Southern Timber Corp. | added 10/2003; eliminated 4/2004; 7/2005 (not listed) | | NAKINA |
| 10697 | STIX | Stauffer Chemical Co. | 4/38-1/52; eliminated 7/56 | | NRHS |
| 10698 | STIX | Surface Transportation International, Inc. | 1/80; eliminated 4/80 | | NRHS |
| 10699 | STIX | *STAUFFER CHEMICAL CO. | | | PWRC |
| 10700 | STIX | *SURFACE TRANSPORTATION INTERNATIONAL, INC. | | | PWRC |
