| 1 | SML | Smith Air (1976) Ltd. | Callsign: Smith Air, | CDN | AVCODES |
| 2 | SML | Meteor Aero Ltd. | Operates Bae 146 G-SMLA | GB | AVCODES |
| 3 | SML | Skyline Aviation S.r.l. | Callsign: Skyline, AOC granted on 23 August 2016. | RSM | AVCODES |
| 4 | SML | Smith Air (1976) | | | ICAO1 |
| 5 | SML | SEABOARD MARINE LTD. | | | PWRC |
| 6 | SML | SUTHERLAND BROTHERS INC | | | SCAC4 |
| 7 | SMLA | STATE MERCANTILE COMPANY S.A | | | SCAC4 |
| 8 | SMLB | SEABOARD MARINE LTD. | | | PWRC |
| 9 | SMLC | SEABOARD MARINE LTD. | | | PWRC |
| 10 | SMLC | SYSTEM LINE CARGO | | | SCAC4 |
| 11 | SMLD | S & M TRUCKING LIMITED | | | SCAC4 |
| 12 | SMLE | SUMMIT LOGISTIC SERVICES LLC | | | SCAC4 |
| 13 | SMLF | SEABOARD MARINE LTD. | | | PWRC |
| 14 | SMLF | SOUTHEAST MOTOR LINE | | | SCAC4 |
| 15 | SMLH | SOMAL TRANSPORT | | | SCAC4 |
| 16 | SMLI | SMOOTHIELAND INC | | | SCAC4 |
| 17 | SMLL | SMITH, L L TRUCKING | | | SCAC4 |
| 18 | SMLN | SMART LINES LLC | | | SCAC4 |
| 19 | SMLO | SOUTHMAN LOGISTICS INC | | | SCAC4 |
| 20 | SMLP | STC INC | | | SCAC4 |
| 21 | SMLR | SANCHEZ MORALES, LUIS ROBERTO | | | SCAC4 |
| 22 | SMLS | SUMITOMO METAL LOGISTICS SERVICE CO | | | SCAC4 |
| 23 | SMLT | SEAGLANCE MARITIME LIMITED | | | SCAC4 |
| 24 | SMLU | SEABOARD MARINE LTD | | USA | BIC |
| 25 | SMLU | SEABOARD MARINE LTD. | | | PWRC |
| 26 | SMLU | Seaboard Marine Limited | | | RSRV |
| 27 | SMLU | SEABOARD MARINE LTD | | | SCAC1 |
| 28 | SMLU | SEABOARD MARINE LTD | | | SCAC4 |
| 29 | SMLV | SCHMOLZ & BICKENBACK CANADA INC | | | SCAC4 |
| 30 | SMLX | St. Maurice Chemicals, Ltd. | 1/1945 | | NAKINA |
| 31 | SMLX | *ST. MAURICE CHEMICALS, LTD. | | | PWRC |
| 32 | SMLX | +SAN MARINO LTD. | | | PWRC |
| 33 | SMLX | SAN MARINO LIMITED | | | SCAC4 |
| 34 | SMLZ | SEABOARD MARINE LTD. | | | PWRC |
| 35 | SMLZ | Seaboard Marine Limited | | | RSRV |
| 36 | SMLZ | SEABOARD MARINE LTD. | | | SCAC4 |
