| 1 | SMB | Simba Air Cargo Ltd. | Callsign: Simbair, Ceased operations. | EAK | AVCODES |
| 2 | SMB | Solothurn - Moutier-Bahn | | CH | TRAFFIC |
| 3 | SMBC | SIMBEL E N E | | | SCAC4 |
| 4 | SMBF | SMITH, JOHN D TRUCKING LLC | | | SCAC4 |
| 5 | SMBI | SMB MFG INC | | | SCAC4 |
| 6 | SMBJ | SMS TRUCKING INC | | | SCAC4 |
| 7 | SMBK | SIMBECK INC | | | SCAC4 |
| 8 | SMBL | SMITH BROTHERS TRANSPORT LLC | | | SCAC4 |
| 9 | SMBN | SMITH TRUCKING INC | | | SCAC4 |
| 10 | SMBO | SMITH BROTHERS TRUCKING CO INC | | | SCAC4 |
| 11 | SMBP | SMOOT BROS TRANSPORTATION | | | SCAC4 |
| 12 | SMBQ | SPECIALITES MB INC | | | SCAC4 |
| 13 | SMBR | SMT TRUCKING COMPANY | | | SCAC4 |
| 14 | SMBT | SERRATOS MOBILE HOMES | | | SCAC4 |
| 15 | SMBU | SAMBU LINE, S.A. | | | SCAC4 |
| 16 | SMBV | SOUTHERN MAINE SITEWORK INC | | | SCAC4 |
| 17 | SMBW | SHARP, MICHAEL A TRUCKING | | | SCAC4 |
| 18 | SMBY | SUPERS | | | SCAC4 |
