| 1 | SUC | Suramericana de Aviacion, C.A. (Surca) | Callsign: Surca, | YV | AVCODES |
| 2 | SUC | Sunfly, S.L. | | E | AVCODES |
| 3 | SUCAQ | SUCRE AQUITAINE | | FR | VKM |
| 4 | SUCB | SOUTHERN CAL TRANSPORT INC | | | SCAC4 |
| 5 | SUCC | SUNCO CARRIERS INC | | | SCAC4 |
| 6 | SUCC | Surray County Council | | GB | TRAFFIC |
| 7 | SUCG | SUPER CARTAGE COMPANY, INC | | | SCAC1 |
| 8 | SUCL | SUNICE CARGO LOGISTICS | | | SCAC4 |
| 9 | SUCM | SUPPLY CHAIN MANAGEMENT INC | | | SCAC4 |
| 10 | SUCN | SUTTON SYSTEM SALES INC | | | SCAC4 |
| 11 | SUCP | SUPREME CARRIERS INC | | | SCAC4 |
| 12 | SUCQ | SU CARGA EXPRESS | | | SCAC4 |
| 13 | SUCS | SUNHOUSE PETROLEUM LLC | | | SCAC4 |
| 14 | SUCU | SITAL SRL | | I | BIC |
| 15 | SUCV | SUN CITY TOWING & RECOVERY LP | | | SCAC4 |
| 16 | SUCX | Merchants Despatch Transportation Corp. | added 10/1954; 10/1957-4/1970; eliminated 7/1972 | | NAKINA |
| 17 | SUCX | Merchants Despatch Transportation Corp. | 10/57-4/70 | | NRHS |
| 18 | SUCX | MERCHANTS DESPATCH TRANSPORTATION CORP. | | | PWRC |
