| 1 | TWO | Twente Airlines | Callsign: Colibri, | NL | AVCODES |
| 2 | TWO | Twente Airlines | | | ICAO1 |
| 3 | TWOA | TWO SHOES SPECIALIZED INC | | | SCAC4 |
| 4 | TWOB | TWO B (2B) TRUCKING LLC | | | SCAC4 |
| 5 | TWOD | TIS WORLDWIDE | | | SCAC4 |
| 6 | TWOE | TOWNSEND OIL CORP | | | SCAC4 |
| 7 | TWOF | TWILIGHT OILFIELD HAULING LTD | | | SCAC4 |
| 8 | TWOG | THIRTY ONE (31) DIESEL TRUCK & WREC | | | SCAC4 |
| 9 | TWOH | TWO HEART TRANSPORT INC | | | SCAC4 |
| 10 | TWOK | TWORKS | | | SCAC4 |
| 11 | TWOR | TRANS WORLD LINES | | | SCAC4 |
| 12 | TWOU | 2M TRANSPORT LLC | | USA | BIC |
| 13 | TWOV | TWO VALLEY TRANSPORTATION INC | | | SCAC4 |
| 14 | TWOW | TWO WAY TRANSFER S A DE C V | | | SCAC4 |
| 15 | TWOX | Tidewater Oil Sales Corp. | 7/1930-7/1932 | | NAKINA |
| 16 | TWOX | Tide Water Oil Co. | 7/1935 | | NAKINA |
| 17 | TWOX | Tide Water Associated Oil Co. | 7/1937-7/1954; eliminated 10/1956 | | NAKINA |
| 18 | TWOX | Tidewater Oil Co. | added 10/1956; 10/1957-10/1966; eliminated 10/1967 | | NAKINA |
| 19 | TWOX | Getty Oil Co. | added 10/1967; 4/1970; eliminated 4/1972 | | NAKINA |
| 20 | TWOX | Tidewater Oil Co. | 4/38-10/66; eliminated 10/67 | | NRHS |
| 21 | TWOX | Getty Oil Co. | added 10/67; 4/70; eliminated 4/72 | | NRHS |
| 22 | TWOX | GETTY OIL CO. [TIDEWATER OIL CO.; TIDE WATER ASSOCIATED OIL CO.; TIDEWATER OIL SALES CORP.] | | | PWRC |
| 23 | TWOZ | TWIN OAKS | | | PWRC |
