| 1 | SID | Sidfin Air Limited | Callsign: Sidfin, | Z | AVCODES |
| 2 | SID | Sideral Linhas Aereas Ltda | Callsign: Sideral, | BR | AVCODES |
| 3 | SIDB | SIDHU BROTHERS INC | | | SCAC4 |
| 4 | SIDC | SIMONSEN TRUCKING | | | SCAC4 |
| 5 | SIDE | SCHEIDERER TRANSPORT INC | | | SCAC4 |
| 6 | SIDER | Siderpotenza Steel Works | | I | TRAFFIC |
| 7 | SIDG | SIEDHOFF DISTRIBUTING CO | | | SCAC4 |
| 8 | SIDH | SIDHU SERVICES LTD | | | SCAC4 |
| 9 | SIDI | SHANE TRANSPORT, Shane Industries, INC | | | SCAC1 |
| 10 | SIDI | SHANE TRANSPORT | | | SCAC4 |
| 11 | SIDM | SINDALL TRANSPORT INC | | | SCAC4 |
| 12 | SIDO | SERVICIOS INTEGRALES DE TRANSPORTES | | | SCAC4 |
| 13 | SIDQ | STAR INDUSTRIES LLC | | | SCAC4 |
| 14 | SIDS | SUPERIOR INTERMODAL SERVICES INC | | | SCAC4 |
| 15 | SIDU | CHEMIKALIEN UND FLUESSIGKEITSTRANSPORTE A. SIEPMANN GMBH | | D | BIC |
| 16 | SIDY | SINANO SHIPMANAGEMENT LIMITED | | | SCAC4 |
