| 1 | SWI | Sunworld International Airlines, Inc. | IATA: SM, Callsign: Sunworld, IATA Prefix: 375, Designator SM recalled by IATA | USA | AVCODES |
| 2 | SWI | Sunworld International Airlines, Inc. | IATA: X5, IATA designator changed to SM | USA | AVCODES |
| 3 | SWI | Sunworld International Airlines, Inc. | Callsign: Sunworld, Designator SM recalled by IATA | USA | AVCODES |
| 4 | SWI | Sunworld Airlines | | | ICAO1 |
| 5 | SWIA | SWISSAIR | | | SCAC4 |
| 6 | SWIB | SWI TRANSPORTATION, INC | | | SCAC1 |
| 7 | SWIB | SWI TRANSPORTATION INC | | | SCAC4 |
| 8 | SWID | MPK Swidnica | | PL | TRAFFIC |
| 9 | SWIEB | Zakład Gospodarki Komunalnej Świebodzice | | PL | TRAFFIC |
| 10 | SWIER | Przedsiębiorstwo Komunikacji Miejskiej Świerklaniec | | PL | TRAFFIC |
| 11 | SWIF | SWIFT TRANSPORTATION CO INC (INTERM | | | SCAC4 |
| 12 | SWII | SWISSLINE INDUSTRIES LIMITED | | | SCAC4 |
| 13 | SWIJ | SWAT INTERNATIONAL INC | | | SCAC4 |
| 14 | SWIL | SKY-WORLD INTL EXPRESS CORP | | | SCAC4 |
| 15 | SWIM | SOUTHWEST INTERNATIONAL SHIPPING | | | SCAC4 |
| 16 | SWIQ | SWIFT COURIERS INC | | | SCAC4 |
| 17 | SWISS | Swiss International Air Lines | Real: SWR, LX | CH | TRAFFIC |
| 18 | SWIT | SWITZER, WILLIAM & ASSOCIATED LTD | | | SCAC4 |
| 19 | SWIU | SWISS ISO TANKS AG | | CH | BIC |
| 20 | SWIU | SEAWHEEL LIMITED | | | SCAC4 |
| 21 | SWIVT | Swietelsky Vasúttechnika Kft | | HU | VKM |
| 22 | SWIW | SIMARD WESTLINK INC | | | SCAC4 |
| 23 | SWIX | Stonewall Industries | | | RSRV |
| 24 | SWIY | SWS WARNING SYSTEMS INC | | | SCAC4 |
| 25 | SWIZ | SUPER WOOD INC. | | | PWRC |
