| 1 | SSC | Southern Skies Commuter Co. | Callsign: Southern Skies, Name changed to Southern Seaplane, Inc. | USA | AVCODES |
| 2 | SSC | Southern Seaplane, Inc. | Callsign: Southern Skies, Name changed from Southern Skies Commuter Co. | USA | AVCODES |
| 3 | SSC | Southern Seaplane | | | ICAO1 |
| 4 | SSC | Southern Switching Co. | added 1/1995; eliminated 7/1996; 7/2000-7/2005 | | NAKINA |
| 5 | SSC | Southern Switching Co. | added 1/95; eliminated 7/96; 7/2000 | | NRHS |
| 6 | SSC | SOUTHERN SWITCHING COMPANY (STOCKYARDS SERVICE COMPANY) | | | PWRC |
| 7 | SSC | Southern Switching | | | RSRV |
| 8 | SSC | SOUTHERN SWITCHING COMPANY | | | SCAC4 |
| 9 | SSCA | SEVEN SEAS CARRIERS AS | | | SCAC4 |
| 10 | SSCC | SERRA, S CHEESE CO | | | SCAC4 |
| 11 | SSCD | S S CHAD EXPRESS LLC | | | SCAC4 |
| 12 | SSCE | SUPERIOR SEAFOODS COMPANY INC | | | SCAC4 |
| 13 | SSCF | SCHNEIDER NATIONAL CARRIERS INC (CO | | | SCAC4 |
| 14 | SSCH | SUNSHINE CHARTERS INC | | | SCAC4 |
| 15 | SSCI | SECURITY STORAGE COMPANY OF CHARLOT | | | SCAC4 |
| 16 | SSCK | S & S TRUCKING | | | SCAC4 |
| 17 | SSCN | SSC TRANSPORTS INC | | | SCAC4 |
| 18 | SSCO | SHOTA SHIPPING CO.,LTD. | | | SCAC4 |
| 19 | SSCP | SOUTHERN STATES COOPERATIVE INC | | | SCAC4 |
| 20 | SSCR | SLADOVNY SOUFFLET ČR a.s. | | CZ | VKM |
| 21 | SSCS | SPECTRUM SUPPLY CHAIN SOLUTIONS INC | | | SCAC4 |
| 22 | SSCT | SISCO TRUCKING | | | SCAC4 |
| 23 | SSCU | SHANGHAI SHOWA CHEMICALS CO.LTD | | PRC | BIC |
| 24 | SSCU | STATES STEAMSHIP CO. | | | PWRC |
| 25 | SSCU | States Steamship | | | RSRV |
| 26 | SSCU | STATES STEAMSHIP COMPANY | | | SCAC4 |
| 27 | SSCX | Southern States Chemical Co. | added 7/1963; 7/1965-10/1966; eliminated 10/1967 | | NAKINA |
| 28 | SSCX | Southern Stone Co., Inc. | added 4/1971; 1/1975; eliminated 7/1979 | | NAKINA |
| 29 | SSCX | Southern States Chemical Co. | added 7/63; 7/65-10/66; eliminated 10/67 | | NRHS |
| 30 | SSCX | Southern Stone Co., Inc. | added 4/71; 1/75; eliminated 7/79 | | NRHS |
| 31 | SSCX | *STOCKYARDS SERVICE COMPANY | | | PWRC |
| 32 | SSCX | *SOUTHERN STATES CHEMICAL CO. | | | PWRC |
| 33 | SSCX | *SOUTHERN STONE CO., INC. | | | PWRC |
| 34 | SSCX | SOUTHERN STONE COMPANY | | | SCAC4 |
| 35 | SSCY | SCHAPER SERVICES CO THE | | | SCAC4 |
| 36 | SSCZ | (SSCU) STATES STEAMSHIP CO. | | | PWRC |
| 37 | SSCZ | States Steamship | | | RSRV |
| 38 | SSCZ | STATES STEAMSHIP CO. | | | SCAC4 |
