| 1 | SIB | Joint Stock Company SIAT (Sibaviatrans) | IATA: 5M, Callsign: Sibavia, IATA Prefix: 842, Suspended operations at the end of September 2008 due to the Air Union collapse. | RUS | AVCODES |
| 2 | SIB | Siba S.p.A. | | I | AVCODES |
| 3 | SIB | Sea Air Ltd. | Callsign: Sea Air, | SLO | AVCODES |
| 4 | SIB | Sibaviatrans | IATA: 5M | | ICAO1 |
| 5 | SIBB | SOUTHWESTERN ILLINOIS BUS COMPANY L | | | SCAC4 |
| 6 | SIBD | SIMON TRANSPORT LLC (BROKERAGE DIVI | | | SCAC4 |
| 7 | SIBG | SIT | | | SCAC4 |
| 8 | SIBI | SISBRO, INC | | | SCAC1 |
| 9 | SIBI | SISBRO INC | | | SCAC4 |
| 10 | SIBIU | Sibiu: Tursib | | RO | TRAFFIC |
| 11 | SIBN | SIBRIAN TRUCKING | | | SCAC4 |
| 12 | SIBP | SIMBA TRANSPORT LTD | | | SCAC4 |
| 13 | SIBQ | SERVICES INTERNATIONAL | | | SCAC4 |
| 14 | SIBRA | Société Intercommunale des Bus de la Région d'Annecy | City: Annecy | F | TRAFFIC |
| 15 | SIBS | SIMPSON FISHING CO LTD | | | SCAC4 |
| 16 | SIBT | SIBLEY TRUCKING INC | | | SCAC4 |
| 17 | SIBU | GE SIMONS INTERNATIONAL TRANSPORT BV | | NL | BIC |
| 18 | SIBU | GE SIMONS INTERNATIONAL TRANSPORT B | | | SCAC4 |
| 19 | SIBV | SCHILLI DISTRIBUTION SERVICES INC | | | SCAC4 |
| 20 | SIBZD | Siberian Railway | | RUS | TRAFFIC |
