List of reporting marks: T
# List of reporting marks: T

Note: Marks ending in U are for container owners; marks ending in X are not common carriers; marks ending in Z are for trailers without flanged wheels. All other marks are of common-carrier railroads.

## T

* TACX - Transport Arts Corporation
* TAEA - Tangipahoa and Eastern
* TAG - Tennessee, Alabama and Georgia Railway; Southern Railway; Norfolk Southern Railway
* TANX - Transitank Car Leasing Corporation
* TARX - Sandersville Leasing
* TASD - Terminal Railway Alabama State Docks
* TATX - Tanco Transportation Corporation
* TBCX - The Boeing Company
* TBOX - TTX Company
* TBRY - Thermal Belt Railway
* TBV - Trinity and Brazos Valley Railway
* TC - Tennessee Central Railroad, Temple and Texas Central Railroad
* TCAX - Transportation Corporation of America
* TCB - Texas Central Business Lines
* TCBR - Tecumseh Branch Connecting Railroad
* TCBX - AIG Rail Services
* TCCX - TCCX Corporation
* TCDX - Tennessee Chemical Company
* TCGB - Tucson, Cornelia and Gila Bend Railroad
* TCGX - Tri-County Gas
* TCIX - Trinity Chemical Leasing
* TCKR - Turtle Creek Industrial Railroad
* TCL - Twin City Lines
* TCLX - Trinity Chemical Leasing
* TCMX - Transportation Company of America
* TCRT - Twin City Rapid Transit Company
* TCRY - Tri-City Railroad
* TCStL - Toledo, Cincinnati and St Louis Railroad
* TCSX - Tank Car Services, Inc.
* TCSZ - Triple Crown Service
* TCT - Texas City Terminal Railway
* TCWR - Twin Cities and Western Railroad
* TCX - General American Transportation Corporation
* TDB - Toledo, Delphos and Burlington Railroad
* TE - Tacoma Eastern Railway
* TECX - Texas Crushed Stone Company
* TECO - Teamo-Tacoma Railroad; Lincoln Pacific Railway
* TEIX - Transportation Equipment, Inc.
* TELX - Penwalt Carriers Corporation; ELF Atochem North America
* TEM - Temiskaming and Northern Ontario
* TEMX - Temple-Eastex
* TENN - Tennessee Railway
* TER - Texas & Eastern Railroad, Texas Electric Railway
* TEXC - Texas Central Railroad
* TFM - Grupo Transportación Ferroviaria Mexicana
* TFS - Texarkana and Fort Smith Railway; Kansas City Southern Railway
* TG - Tonopah and Goldfield Railroad, Tremont and Gulf Railway
* TGAX - Texasgulf
* TGCX - PolyOne Company
* TGIX - Texasgulf; PCS Phosphate Company
* TGOX - US Rail Services
* TGPX - Tamak Transportation Corporation
* TGSX - Texasgulf; Tg Soda Ash
* THB - Toronto, Hamilton and Buffalo Railway; Canadian Pacific Railway
* THR - Thunder Rail
* THRX - Transportation Company of America
* THSX - New York, Susquehanna, & Western Technical and Historical Society
* TI - Turners Island, LLC
* TIBR - Timber Rock Railroad
* TILX - Trinity Industries Leasing
* TIMX - Trinity Industries Leasing
* TIPP - Tippecanoe Railway
* TIRL - Tonawanda Island Railroad
* TJRX - S. M. Brooks Company
* TKCX - Thiele Kaolin Company
* TKEN - Tennken Railroad
* TLCX - Pullman Leasing Company
* TLDX - Pullman Leasing Company; General Electric Rail Services
* TLTX - Tilcon-Tomasso Construction
* TM - Texas Midland Railroad, Texas Mexican Railway; Kansas City Southern Railway
* TMAX - Tennessee River Pulp and Paper Company
* TMBL - Tacoma Municipal Belt Line Railway
* TMER&L - The Milwaukee Electric Railway & Light Company
* TMLX - Thunder Mountain Line
* TMO - Vitebsk Seaway and Continental Railway; Lincoln Pacific Railway
* TMPX - Texas Municipal Power Agency
* TMSS - Towanda-Monroeton Shippers Lifeline, Inc.
* TMT - Trailer Marine Transportation Corporation
* TMTC - Tri-County Metropolitan Transit District of Oregon
* TN - Texas and Northern Railway
* TNCX - North American Car Corp.; General Electric Railcar Services Corp.; General Electric Rail Services Corp. (Lessee: Nestlé)
* TNER - Texas Northeastern Railroad
* TNHR - Three Notch Railroad
* TNM - Texas - New Mexico Railway
* TNMR - Texas-New Mexico Railroad; Austin and Northwestern Railroad
* TNO - Texas and New Orleans Railroad; Southern Pacific Railroad; Union Pacific Railroad
* TNSR - Nashtown and Southern Railroad; Lorraine, Eastern and Pacific Railroad;
* TNVR - Tennessee Valley Railroad Museum
* TNW - Toledo and Northwestern Railroad; Chicago and Northwestern Railway
* TOC - Conrail
* TOE - Texas, Oklahoma and Eastern Railroad
* TOV - Tooele Valley Railway
* TP - Texas & Pacific Railway; Missouri Pacific Railroad; Union Pacific Railroad
* TPBX - General American Transportation Corporation
* TPCX - The Purdy Company
* TPFX - General Electric Rail Services
* TPIX - Tropicana Products; PepsiCo
* TPOC - Tulsa Port of Catoosa
* TPPX - Thilmany
* TPRX - Texas Power and Light Company
* TPT - Conrail
* TPTX - Trailer Train Company
* TPW - Toledo, Peoria & Western Railway; Atchison, Topeka & Santa Fe Railway; BNSF
* TQEX - First Union Rail
* TR - Tomahawk Railway
* TRAX - RailTex
* TRBX - Timken Roller Bearing Company
* TRC - Trona Railway
* TRCX - Tri-Rail
* TRE - Trinity Railway Express
* TRGX - Terminal Grain Corporation
* TRIN - Trinidad Railway
* TRIX - Midwest Energy Services Company
* TRLX - Texas Railcar Leasing Company
* TRMW - Tacoma Rail
* TRMX - TRM Industries
* TRNX - General Electric Rail Services
* TRPX - Tropigas
* TRR - Torch River Rail
* TRRA - Terminal Railroad Association of St Louis
* TRRY - Trillium Railway
* TRSX - General Electric Rail Services
* TRTX - W. J. Kirberger, Trustee
* TRUX - Midwest Bottle Gas Company
* TRYX - Tri-County Cooperative Association
* TS - Tidewater Southern Railway
* TSBY - Tuscola & Saginaw Bay Railway
* TSE - Texas South-Eastern Railroad
* TSH - Tshiuetin Rail Transportation
* TSO - Tidewater Southern Railway
* TSPX - Texas Sulphur Products Company
* TSR - Texas State Railroad
* TSRD - Twin State Railroad
* TSRR - Tennessee Southern Railroad
* TStLW - Toledo, St Louis & Western Railroad
* TSU - Tulsa-Sapulpa Union Railway
* T&T - Tama and Toledo Railroad
* TT - Toledo Terminal Railroad, Tonopah & Tidewater Railroad
* TTAX - TTX Company
* TTBX - TTX Company
* TTCX - TTX Company
* TTDX - TTX Company
* TTER - Tomiko Tilden & Eastern Railway
* TTEX - TTX Company
* TTFX - TTX Company
* TTGX - TTX Company
* TTHX - TTX Company
* TTIS - Transkentucky Transportation Railroad
* TTIX - TTX Company
* TTJX - TTX Company
* TTKX - TTX Company
* TTLX - TTX Company
* TTMX - TTX Company
* TTNX - TTX Company
* TTOX - TTX Company
* TTPX - TTX Company
* TTQX - TTX Company
* TTR - Tijuana and Tecate Railway; Talleyrand Terminal Railroad
* TTRX - TTX Company
* TTSX - TTX Company
* TTTX - TTX Company
* TTUX - TTX Company
* TTVX - TTX Company
* TTWX - TTX Company
* TTX - TTX Company
* TTXX - TTX Company
* TTYX - TTX Company
* TTZX - TTX Company
* TUGX - Texas Utilities Generating Company
* TUST - Texarkana Union Station Trust
* TVAX - Tennessee Valley Authority
* TVRM - Tennessee Valley Railroad Museum
* TVRR - Tulare Valley Railroad, Tanana Valley Railroad
* TWGX - Tidewater Grain Company
* TWRY - Tradewater Railway
* TXIX - Texas Industries
* TXN - Texas & New Mexico Railway
* TXNW - Texas North Western Railway
* TXOR - Texas and Oklahoma Railroad
* TXPF - Texas Pacifico Transportation
* TXR - Texas Rock Crusher Railroad
* TXRC - Texas Export Railroad
* TXTC - Texas Transportation Company
* TXTX - Econo-Rail Corporation
* TYBR - Tyburn Railroad
* TYC - Tylerdale Connecting
* TYNT - Tyner Terminal Railroad
* TZPR - Tazewell & Peoria Railroad
