| 1 | TOS | Tropic Air Limited | IATA: PM, Callsign: Tropiser, Designator PM recalled by IATA | BH | AVCODES |
| 2 | TOS | Tropic Air Limited | IATA: 9N, Callsign: Tropiser, Designator PM recalled by IATA | BH | AVCODES |
| 3 | TOS | Tropic Air | IATA: PM | | ICAO1 |
| 4 | TOSA | TRAJOSA | | | SCAC4 |
| 5 | TOSA | Tosa Electric Railway | City: Torun | J | TRAFFIC |
| 6 | TOSB | TWO ONE SIX NINE FIVE ZERO TWO (216 | | | SCAC4 |
| 7 | TOSC | TORRES, CARLOS L TRUCKING | | | SCAC4 |
| 8 | TOSE | TEAM OCEAN SERVICES INC | | | SCAC4 |
| 9 | TOSG | TRANSOCEANIC SHIPPING COMPANY INC | | | SCAC1 |
| 10 | TOSI | TRANSPORT O S I INC | | | SCAC4 |
| 11 | TOSJ | THREE ONE SEVEN FOUR FIVE T | | | SCAC4 |
| 12 | TOSK | TROSKA TRUCKING INC | | | SCAC4 |
| 13 | TOSM | TOTAL SCRAP | | | SCAC4 |
| 14 | TOSN | TWO ONE SEVEN ZERO EIGHT EIGHT THRE | | | SCAC4 |
| 15 | TOSO | TRANSPORT STAN INC | | | SCAC4 |
| 16 | TOSP | TWO ONE SIX SIX EIGHT EIGHT TWO (21 | | | SCAC4 |
| 17 | TOSQ | TWO ONE SEVEN FOUR NINE ZERO NINE | | | SCAC4 |
| 18 | TOSS | TRAMOSSA | | | SCAC4 |
| 19 | TOST | TOWNS TRANSPORTATION INC | | | SCAC4 |
| 20 | TOSU | TRANSOCEAN EQUIPMENT LTD. | | HK | BIC |
| 21 | TOSV | TOPOLIA SHIPPING SERVICES S A | | | SCAC4 |
| 22 | TOSY | TO SUIT YOUR FANCY | | | SCAC4 |
