| 10001 | SSJ | Skåne - Smålands Järnväg | 1894 - 1940 | S | svenska-lok.se |
| 10002 | SSJB | S & S FREIGHT | | | SCAC4 |
| 10003 | SSJD | S & S TRUCKING | | | SCAC4 |
| 10004 | SSJF | Skåne-Smålands Järnvägsmuseiförening | | SE | VKM |
| 10005 | SSJH | SELECT SHIPPERS INC | | | SCAC4 |
| 10006 | SSJI | S & S INTL PRODUCTS & MFG INC | | | SCAC4 |
| 10007 | SSJP | STARS & STRIPES INC | | | SCAC4 |
| 10008 | SSJR | Sheffield Station Junction Ry. | 7/2000-7/2005 | | NAKINA |
| 10009 | SSJR | Sheffield Station Junction Ry. | Jul-00 | | NRHS |
| 10010 | SSJR | SHEFFIELD STATION JUNCTION RAILWAY | | | PWRC |
| 10011 | SSJR | Sheffield Station Junction Railway | | | RSRV |
| 10012 | SSJR | SHEFFIELD STATION JUNCTION RAILWAY | | | SCAC4 |
| 10013 | SSJU | SUMITOMO 3M | | | PWRC |
| 10014 | SSJU | Sumitomo 3M | | | RSRV |
| 10015 | SSJU | SUMITOMO 3M | | | SCAC4 |
| 10016 | SSJV | S & S TRANSPORTATION SERVICE INC | | | SCAC4 |
| 10017 | SSJY | S & S TRANSPORTATION LLC | | | SCAC4 |
| 10018 | SSK | Skystar International, Inc. | Callsign: Skystar, | USA | AVCODES |
| 10019 | SSK | Skystar International | | | ICAO1 |
| 10020 | SSKB | SS TRUCKING SERVICE | | | SCAC4 |
| 10021 | SSKC | SISK TRUCKING | | | SCAC4 |
| 10022 | SSKD | SASKCAN PULSE TRADING | | | SCAC4 |
| 10023 | SSKE | S & S TRUCKING | | | SCAC4 |
| 10024 | SSKF | SCRASE TRUCKING LTD | | | SCAC4 |
| 10025 | SSKG | S & S TRUCKING | | | SCAC4 |
| 10026 | SSKH | SALAS TRUCKING | | | SCAC4 |
| 10027 | SSKJ | SOCIOS TRUCKING INC | | | SCAC4 |
| 10028 | SSKL | SSS TRUCKING INC | | | SCAC4 |
| 10029 | SSKP | SSP TRANSPORT | | | SCAC4 |
| 10030 | SSKS | SEA AND SUN TRUCKING INC | | | SCAC4 |
| 10031 | SSKU | {LLC "TLC SAKH-EX"};ZIPCODE=105064 | | RUS | BIC |
| 10032 | SSKU | SHIRE SHIPPING | | | SCAC4 |
| 10033 | SSKV | SANTOS TRUCKING INC | | | SCAC4 |
| 10034 | SSKW | SUNRISE TRUCK SERVICE INC | | | SCAC4 |
| 10035 | SSKX | Solvay Sales Corp. | 7/1935 | | NAKINA |
| 10036 | SSKY | SISKEY HAULING CO INC | | | SCAC4 |
| 10037 | SSL | Air Sultan Limited | Callsign: Sierra Sultan, | WAL | AVCODES |
| 10038 | SSL | Air Sultan | | | ICAO1 |
| 10039 | SSL | Skaneateles Short Line R.R. Corp. | 1/1975-1/1980; eliminated 10/1981 | | NAKINA |
| 10040 | SSL | Skaneateles Short Line R.R. Corp. | 1/75-1/80; eliminated 10/81 | | NRHS |
| 10041 | SSL | SKANEATELES SHORT LINE RAILROAD | | | PWRC |
| 10042 | SSL | SKANEATELES SHORT LINE RAILROAD COR | | | SCAC4 |
| 10043 | SSLB | S & S LEASING | | | SCAC4 |
| 10044 | SSLD | SPEARING SERVICE LP | | | SCAC4 |
| 10045 | SSLE | SEA STAR LINE CARIBBEAN LLC | | | SCAC4 |
| 10046 | SSLF | SCENIC STAGE LINE INC | | | SCAC4 |
| 10047 | SSLG | S & S LEASING | | | SCAC4 |
| 10048 | SSLH | SEA STAR LINE LLC | | | SCAC4 |
| 10049 | SSLJ | SUNRISE SET LLC | | | SCAC4 |
| 10050 | SSLK | SIDDALL'S LIVESTOCK INC | | | SCAC4 |
| 10051 | SSLL | SSL LINE LTD | | | SCAC4 |
| 10052 | SSLN | SOMETHING SPECIAL LIMOUSINE | | | SCAC4 |
| 10053 | SSLO | SOLIS TRUCKING | | | SCAC4 |
| 10054 | SSLP | SUNSHINE LOGISTICS INC | | | SCAC4 |
| 10055 | SSLQ | STS LLC | | | SCAC4 |
| 10056 | SSLS | SHIPPER SERVICES LLC | | | SCAC4 |
| 10057 | SSLU | SEA-LAND LOGISTICS ENTERPRISES PTE LTD | | SGP | BIC |
| 10058 | SSLV | Southern San Luis Valley R.R. Co. | 1/1975-1/1980; eliminated 1/1994; 1/1994-7/2005 (not listed) | | NAKINA |
| 10059 | SSLV | Southern San Luis Valley R.R. Co. | 1/75-1/80; eliminated 1/94; 7/2000 | | NRHS |
| 10060 | SSLV | SOUTHERN SAN LUIS VALLEY RAILROAD COMPANY | | | PWRC |
| 10061 | SSLV | Southern San Luis Valley Railroad | | | RSRV |
| 10062 | SSLV | SMIT SALVAGE AMERICAS INC | | | SCAC4 |
| 10063 | SSLW | SEVEN STAR LINE | | | SCAC4 |
| 10064 | SSLX | Semet Solvay Co. | 8/1920-4/1947 | | NAKINA |
| 10065 | SSLX | Semet Solvay Division Allied Chemical and Dye Corp. | 1/1950-10/1957; eliminated 7/1958 | | NAKINA |
| 10066 | SSLX | Semet Solvay Division, Allied Chemical Corp. | added 7/1958; 4/1961; eliminated 7/1964 | | NAKINA |
| 10067 | SSLX | Semet Solvay Co. | Apr-38 | | NRHS |
| 10068 | SSLX | Semet Solvay Division Allied Chemical and Dye Corp. | 1/52-10/57; eliminated 7/58 | | NRHS |
| 10069 | SSLX | Semet Solvay Division, Allied Chemical Corp. | added 7/58; 4/61; eliminated 7/64 | | NRHS |
| 10070 | SSLX | SEMET SOLVAY DIV., ALLIED CHEMICAL CORP. | | | PWRC |
| 10071 | SSLY | SHIP & STOR LLC | | | SCAC4 |
| 10072 | SSLZ | Sea Star Line | | | RSRV |
| 10073 | SSLZ | SEASTAR LINES | | | SCAC4 |
| 10074 | SSM | Aero 1 Prop-Jet, Inc. | Callsign: Rapid, | CDN | AVCODES |
| 10075 | SSM | Aero 1 Pro-Jet | | | ICAO1 |
| 10076 | SSM | SAULT SAINT MARIE BRIDGE COMPANY | | | PWRC |
| 10077 | SSMC | SMITH & SMITH TRANSFER CO INC | | | SCAC4 |
| 10078 | SSMD | SHAPIRO, SAMUEL & CO INC | | | SCAC4 |
| 10079 | SSMF | SHEARER MOBILE STORAGE LLC | | | SCAC4 |
| 10080 | SSMH | SILVER STREAM SHELTERS | | | SCAC4 |
| 10081 | SSMI | SNIDER, MILES STUART | | | SCAC4 |
| 10082 | SSMJ | SEVEN SEAS MARINE SERVICES CO | | | SCAC4 |
| 10083 | SSMK | SELTZERS SMOKEHOUSE MEATS | | | SCAC4 |
| 10084 | SSML | SAIL SPECIAL MARITIME ENTERPRISE | | | SCAC4 |
| 10085 | SSMM | SAPRAI MOVING AND DELIVERY SERVICE | | | SCAC4 |
| 10086 | SSMO | SYLVAN SCALE MODELS | | | SCAC4 |
| 10087 | SSMQ | STERLING SIGN MFG INC | | | SCAC4 |
| 10088 | SSMR | SSS MORGANS | | | SCAC4 |
| 10089 | SSMS | SOMERSE | | | SCAC4 |
| 10090 | SSMU | AVANA LOGISTEK LIMITED | | IND | BIC |
| 10091 | SSMU | SHREYAS SHIPPING SERVICES (M) SDN B | | | SCAC4 |
| 10092 | SSMX | Southwestern Sugar & Molasses Co. | 1/1943 (not listed); 1/1945-4/1961; eliminated 10/1963 | | NAKINA |
| 10093 | SSMX | Southwestern Sugar & Molasses Co., Division of National Molasses Co. | added 10/1963; eliminated 10/1964 | | NAKINA |
| 10094 | SSMX | National Molasses Co. | added 10/1964; 7/1965-1/1975; eliminated 4/1975 | | NAKINA |
| 10095 | SSMX | The David J. Joseph Co. | added 4/1990; 1/1994; eliminated 4/2000 | | NAKINA |
| 10096 | SSMX | Joseph Transportation Inc. | added 4/2000; 7/2000; eliminated 10/2003 | | NAKINA |
| 10097 | SSMX | The David J. Joseph Co. | added 10/2003; 7/2005; eliminated 1/2009 | | NAKINA |
| 10098 | SSMX | Southwestern Sugar & Molasses Co. | 1/52-4/61 | | NRHS |
| 10099 | SSMX | National Molasses Co. | 7/65-1/75; eliminated 4/75 | | NRHS |
| 10100 | SSMX | The David J. Joseph Co. | added 4/90; 1/94; eliminated 4/2000 | | NRHS |
