| 1 | SIK | Armadora, S.A. | Callsign: Armadora, | GR | AVCODES |
| 2 | SIK | Sikorsky Aircraft | Sikorsky Aircraft is an American aircraft manufacturer based in Stratford, Connecticut. It was established by the Russian-American aviation pioneer Igor Sikorsky in 1923, and was among the first companies to manufacture helicopters for civilian and military use | USA | TRAFFIC |
| 3 | SIKA | SIKMA TRUCKING | | | SCAC4 |
| 4 | SIKC | SLIMS TRUCKING INC | | | SCAC4 |
| 5 | SIKG | SPARLIN TRUCKING | | | SCAC1 |
| 6 | SIKG | SINDLE TRUCKING LLC | | | SCAC4 |
| 7 | SIKI | STICKS & STONES FABRICATING INC | | | SCAC4 |
| 8 | SIKK | SIKES, K L TRUCKING | | | SCAC4 |
| 9 | SIKM | SIMONIK TRANSPORTATION AND WAREHOUS | | | SCAC4 |
| 10 | SIKT | SILK CITY EXPRESS INC | | | SCAC4 |
| 11 | SIKU | SAMUDERA SHIPPING LINE LTD | | SGP | BIC |
| 12 | SIKU | SAMUDERA SHIPPING LINE LTD | | | SCAC4 |
| 13 | SIKW | SPOTTERS INK INC | | | SCAC4 |
| 14 | SIKY | SILKEY TRUCKING INC | | | SCAC4 |
