| 1 | TY | Air Caledonie | ICAO: TPC, Callsign: Aircal, IATA Prefix: 190, Designator TY reinstated by IATA | NC | AVCODES |
| 2 | TY | Iberworld Airlines S.A.U. | ICAO: IWD, Callsign: Iberworld, Name changed to Orbest Airlines | E | AVCODES |
| 3 | TY | BCM Airlines, S.A. | ICAO: BCM, Callsign: BCM Airlines, Designator TY* recalled by IATA | E | AVCODES |
| 4 | TYA | Joint-stock company NordStar Airlines d/b/a NordStar | IATA: Y7, Callsign: Taimyr, IATA Prefix: 476, Name changed from Open Joint Stock Company Airline Taimyr d/b/a NordStar. | RUS | AVCODES |
| 5 | TYA | Open Joint Stock Company Airline Taimyr d/b/a NordStar | IATA: Y7, Callsign: Taimyr, IATA Prefix: 476, Name changed to Joint-stock company NordStar Airlines d/b/a NordStar. Founded on 17 December 2008. Commenced operations on 17 June 2009. | RUS | AVCODES |
| 6 | TYAB | TRANSPORTES YABRELI | | | SCAC4 |
| 7 | TYAD | TRANSPORTES Y ARRENDAMIENTOS DEL BR | | | SCAC4 |
| 8 | TYAH | TAYLOR, ART HEATING & AIR CONDITION | | | SCAC4 |
| 9 | TYAI | TRINITY TRANSPORT INC | | | SCAC4 |
| 10 | TYAK | T Y A TRUCK'N | | | SCAC4 |
| 11 | TYAM | TRANSPORT YAMACHICHE INC | | | SCAC4 |
| 12 | TYAN | TX TRADING COMPANY | | | SCAC4 |
| 13 | TYAP | TAYLOR INDUSTRIES INC | | | SCAC4 |
| 14 | TYAQ | THERMO-O-TYPE CORPORATION | | | SCAC4 |
| 15 | TYAR | THREE WAY TRANSFER OF ARKANSAS | | | SCAC4 |
| 16 | TYAT | TRANSPORTES Y LOGISTICA INTERNACION | | | SCAC4 |
| 17 | TYBR | Tyburn R.R. Co. | 1/1994-7/2005 | | NAKINA |
| 18 | TYBR | Tyburn R.R. Co. | 1/94-7/2000 | | NRHS |
| 19 | TYBR | TYBURN RAILROAD COMPANY | | | PWRC |
| 20 | TYBR | Tyburn Railroad | | | RSRV |
| 21 | TYBY | TRANSPORT YANNICK BOISJOLY INC | | | SCAC4 |
| 22 | TYC | Transylvania International Airlines | Callsign: Transylvania, | RO | AVCODES |
| 23 | TYC | Tylerdale Connecting | 1/1980-7/2005 | | NAKINA |
| 24 | TYC | Tylerdale Connecting | 1/80-7/2000 | | NRHS |
| 25 | TYC | CSX TRANSPORTATION CORP. [(B&O) TYLERDALE CONNECTING RR.] | | | PWRC |
| 26 | TYC | Tylerdale Connecting | | | RSRV |
| 27 | TYCA | TAYLOR, C E OIL INC | | | SCAC4 |
| 28 | TYCC | TRANSPORT YVON CYR | | | SCAC4 |
| 29 | TYCD | TAYLOR, CECIL DELIVERY SERVICE INC | | | SCAC4 |
| 30 | TYCF | TARGET DELIVERY COMPANY INC | | | SCAC4 |
| 31 | TYCHY | Przedsiębiorstwa Komunikacji Miejskiej w Tychach | | PL | TRAFFIC |
| 32 | TYCI | TROY-COR INVESTMENTS LTD | | | SCAC4 |
| 33 | TYCL | TOTAL TRAC YUKON INC | | | SCAC4 |
| 34 | TYCM | TROY CONTAINER LINES | | | SCAC1 |
| 35 | TYCM | TROY CONTAINER LINE LTD | | | SCAC4 |
| 36 | TYCN | TYCOON TRUCKING | | | SCAC4 |
| 37 | TYCO | TERRY ENTERPRISES INC | | | SCAC4 |
| 38 | TYCR | TRANSPORTES Y CRUCES EGA | | | SCAC4 |
| 39 | TYCU | TOKUYAMA CHEMICALS (ZHEJIANG) CO.,LTD | | PRC | BIC |
| 40 | TYCU | YAMATO TRANSPORT CO LTD | | | SCAC4 |
| 41 | TYCY | TIDY COAST TRANSPORT LLC | | | SCAC4 |
| 42 | TYDB | TAYLOR EXPRESS INC (DB DIVISION) | | | SCAC4 |
| 43 | TYDN | TY-DAN TRANSPORTATION | | | SCAC4 |
| 44 | TYDQ | TRINITY RECYCLING INC | | | SCAC4 |
| 45 | TYDS | TRINITY DISTRIBUTION SERVICES INC | | | SCAC4 |
| 46 | TYE | Tyee Airways Ltd. | IATA: 6T, Callsign: Tyee Air, Designator recalled by IATA | CDN | AVCODES |
| 47 | TYE | Tyee Airways Ltd. | Callsign: Tyee Air, | CDN | AVCODES |
| 48 | TYEG | TRANSPORTES IZABAL CITYLINES | | | SCAC4 |
| 49 | TYEI | TAYLOR EXPRESS INC | | | SCAC4 |
| 50 | TYEN | TAYLOR EXPRESS INC | | | SCAC4 |
| 51 | TYEP | TRANSPORTES YEPEZ | | | SCAC4 |
| 52 | TYER | TYLER XPRESS | | | SCAC4 |
| 53 | TYES | THREEBOYS EXPEDITED SERVICES LLC | | | SCAC4 |
| 54 | TYEV | TRANSPORTES YE VA ME SA DE CV | | | SCAC4 |
| 55 | TYF | Tayflite Limited | Callsign: Tayflite, | GB | AVCODES |
| 56 | TYF | Tayflite | | | ICAO1 |
| 57 | TYFA | TRI COUNTY FARMERS ASSOCIATION TRAN | | | SCAC4 |
| 58 | TYFI | TAYLOR, FLOYD INC | | | SCAC4 |
| 59 | TYFL | TWENTY FOUR/SEVEN (24/7) LOGISTIC S | | | SCAC4 |
| 60 | TYFP | TYCO FIRE & BUILDING PRODUCTS | | | SCAC4 |
| 61 | TYFQ | TAYLOR FARMS INC | | | SCAC4 |
| 62 | TYFZ | TYSON FOODS | | | PWRC |
| 63 | TYG | Trygg-Flyg Erik Trygg AB | IATA: YC, Callsign: Trygg, Designator YC recalled by IATA | S | AVCODES |
| 64 | TYG | Trygg-Flyg | | | ICAO1 |
| 65 | TYGE | Tyczka GmbH & Co KGA | | DE | VKM |
| 66 | TYGG | TIDEY, GREG L | | | SCAC4 |
| 67 | TYGO | TOTALLY GROUND LLC | | | SCAC4 |
| 68 | TYGP | TAYLOR, G TRANSPORT | | | SCAC4 |
| 69 | TYGR | TRANSPORT J Y GIGUERE INC | | | SCAC4 |
| 70 | TYGW | TROYER GROWERS SUPPLY INC | | | SCAC4 |
| 71 | TYGY | TRANSPORT SYGY INC | | | SCAC4 |
| 72 | TYHC | TROY CHARTERING CORPORATION | | | SCAC4 |
| 73 | TYHO | TERRYS HOME OIL CO INC | | | SCAC4 |
| 74 | TYII | THAYER IMPORTS INC | | | SCAC4 |
| 75 | TYIM | TRINITY INDUSTRIES DE MEXICO S DE R | | | SCAC4 |
| 76 | TYIT | TYME-IT TRANSPORTATION INC | | | SCAC4 |
| 77 | TYJ | Tyrolean Jet Service | ICAO designator changed to TJS | A | AVCODES |
| 78 | TYJ | Tyrolean Jet Services Malta Ltd. | Callsign: Tyrol Malta, | M | AVCODES |
| 79 | TYJI | TYJ INC | | | SCAC4 |
| 80 | TYJU | YINGKOU TIANYUNJIE LOGISTICS LIMITE | | | SCAC4 |
| 81 | TYKC | TAYLOR TRUCKING CO | | | SCAC4 |
| 82 | TYKD | TAYLOR TRUCKING AND DOZER SERVICE | | | SCAC4 |
| 83 | TYKG | TONYS TRUCKING | | | SCAC4 |
| 84 | TYKN | TOMMYS TRUCKING INC | | | SCAC4 |
| 85 | TYKQ | TAYLOR TRUCKING INC | | | SCAC4 |
| 86 | TYKR | TORYORK RECYCLING LTD | | | SCAC4 |
| 87 | TYL | Damascene Airlines | Callsign: Damasair, | SYR | AVCODES |
| 88 | TYLA | TAYLOR OIL COMPANY INC | | | SCAC4 |
| 89 | TYLB | TRAYLOR TRUCKING SERVICES INC | | | SCAC4 |
| 90 | TYLC | TAYLOR OIL COMPANY INC | | | SCAC4 |
| 91 | TYLF | TRAYLER, MICHAEL DESIGNS LTD | | | SCAC4 |
| 92 | TYLI | T Y L | | | SCAC4 |
| 93 | TYLJ | TTSL | | | SCAC4 |
| 94 | TYLK | TAYLOR, L B TRUCKING LTD | | | SCAC4 |
| 95 | TYLL | TYLER TRANSPORTATION LLC | | | SCAC4 |
| 96 | TYLM | TAYLOR MOTORS INC | | | SCAC4 |
| 97 | TYLO | TAYLOR LOGISTICS INC | | | SCAC4 |
| 98 | TYLR | TYLER MOVING & STORAGE SYSTEMS INC | | | SCAC4 |
| 99 | TYLV | TAYLOR LOGISTICS INC | | | SCAC4 |
| 100 | TYLY | TRY LEASING CORPORATION | | | SCAC4 |
