| T.R. Miller MillSawmillT.R. Miller Mill Company | United States | - | Operating | No data yet |
| Tako MillPulp millMetsä Board Oyj | Finland | Mixed | Closed 2025 | 210 000 t/y pulp production |
| Tamil Nadu Newsprint (TNPL)Pulp millTamil Nadu Newsprint and Papers Limited | India | Hardwood | Operating | 400 000 t/y pulp production |
| Tan Mai GroupPulp millTan Mai Group Joint Stock Company | Vietnam | Hardwood | Operating | 290 000 t/y pulp production |
| Tartak GałkaSawmillTartak Gałka (bracia Gałek) | Poland | - | Operating | 100 000 m3/y sawn timberestimated from 200 000 m3/y log intake |
| Tartak KołodnoSawmillTartak Kołodno Sienkiewicz sp.j. | Poland | - | Operating | 15 000 m3/y sawn timberestimated from 30 000 m3/y log intake |
| Tartak MGJ (Leśniewo)SawmillMGJ Sp. z o.o. | Poland | Hardwood | Operating | 25 000 m3/y sawn timberestimated from 50 000 m3/y log intake |
| Tartak Olczyk SwidnoSawmillTartak Olczyk Sp. z o.o. | Poland | Softwood | Operating | 300 000 m3/y sawn timberestimated from 600 000 m3/y log intake |
| Tartas MillPulp millRayonier Advanced Materials Inc. | France | Softwood | Operating | 140 000 t/y pulp production |
| Taylormade Timber (Durham)SawmillTaylormade Timber Products Ltd | United Kingdom | Softwood | Operating | 104 000 m3/y sawn timber |
| Teal Jones Plain DealingSawmillTeal Jones Louisiana Holdings | United States | - | Operating | No data yet |
| Teal-Jones J.S. Jones (Surrey)SawmillTeal-Jones Group (J.S. Jones) | Canada | Softwood | Operating | 308 998 m3/y sawn timber |
| Teal-Jones Stag Timber (Surrey)SawmillTeal-Jones Group (Stag Timber Ltd.) | Canada | - | Operating | 79 796 m3/y sawn timber |
| Terminal Forest Products (Richmond)SawmillTerminal Forest Products Ltd. | Canada | Softwood | Operating | 162 988 m3/y sawn timber |
| Terminal Forest Products (Vancouver)SawmillTerminal Forest Products Ltd. | Canada | Softwood | Operating | 84 890 m3/y sawn timber |
| Terneyles Plastun (STS Technowood softwood mill)SawmillJSC Terneyles / CJSC STS Technowood | Russia | - | Operating | No data yet |
| Thompson HardwoodsSawmillThompson Hardwoods | United States | Hardwood | Operating | No data yet |
| Thompson River Lumber Thompson FallsSawmillThompson River Lumber | United States | Softwood | Operating | No data yet |
| Tiaisen SahaSawmillTiaisen Saha Oy | Finland | Softwood | Operating | 40 000 m3/y sawn timber |
| Tibro SågverkSawmillJOWO Group AB | Sweden | Softwood | Operating | No data yet |
| Ticonderoga MillPulp millSylvamo Corporation | United States | Mixed | Operating | 275 000 t/y pulp production |
| Tilly Holzindustrie AlthofenSawmillTilly Holzindustrie Gesellschaft m.b.H. | Austria | Softwood | Operating | No data yet |
| Timberlink Australia (Bell Bay + Tarpeena, combined)SawmillTimberlink Australia | Australia | Softwood | Operating | No data yet |
| Toba Pulp LestariPulp millToba Pulp Lestari Tbk | Indonesia | Hardwood | Closed 2026 | 240 000 t/y pulp production |
| Toftan (Võru)SawmillAS Toftan | Estonia | Softwood | Operating | 245 000 m3/y sawn timber |
| Tolko ArmstrongSawmillTolko Industries Ltd. | Canada | - | Operating | 397 284 m3/y sawn timber |
| Tolko AthabascaSawmillTolko Industries Ltd. | Canada | - | Operating | No data yet |
| Tolko High LevelSawmillTolko Industries Ltd. | Canada | - | Idled | No data yet |
| Tolko Lakeview (Williams Lake)SawmillTolko Industries Ltd. | Canada | - | Operating | 378 608 m3/y sawn timber |
| Tolko LavingtonSawmillTolko Industries Ltd. | Canada | - | Operating | 414 261 m3/y sawn timber |
| Tolko Soda Creek (Williams Lake)SawmillTolko Industries Ltd. | Canada | - | Operating | 308 998 m3/y sawn timber |
| Tolmezzo MillPulp millMosaico S.p.A. (Burgo subsidiary) | Italy | - | Operating | 83 000 t/y pulp production |
| Tomakomai MillPulp millOji Holdings Corporation | Japan | - | Operating | 365 000 t/y pulp production |
| Tomioka MillPulp millOji Paper Co., Ltd. | Japan | - | Operating | 520 000 t/y pulp production |
| Tosen Yaita (トーセン 矢板工場)SawmillTosen Co., Ltd. (株式会社トーセン) | Japan | - | Operating | 60 000 m3/y sawn timberestimated from 120 000 m3/y log intake |
| Três LagoasPulp millEldorado Brasil | Brazil | Hardwood | Operating | 1 800 000 t/y pulp production |
| Três Lagoas MillPulp millSuzano S.A. | Brazil | Hardwood | Operating | 3 250 000 t/y pulp production |
| Trinity River Lumber WeavervilleSawmillTrinity River Lumber Company | United States | Softwood | Operating | No data yet |
| Troger Holz VompSawmillTroger Holz GmbH | Austria | - | Operating | 175 000 m3/y sawn timberestimated from 350 000 m3/y log intake |
| Tschopp Holzindustrie ButtisholzSawmillTschopp Holzindustrie AG | Switzerland | - | Operating | 67 500 m3/y sawn timberestimated from 135 000 m3/y log intake |
| TSLK Ust-Kut (Transsiberian Forest Company)SawmillOOO TSLK | Russia | - | Operating | 500 000 m3/y sawn timber |
| Tugela MillPulp millSappi Limited | South Africa | Softwood | Operating | 170 000 t/y pulp production |
| Tulloch Timber (Nairn)SawmillTulloch Timber (Nairn) Ltd | United Kingdom | Softwood | Operating | No data yet |
| Tumut Kraft MillPulp millVisy | Australia | Softwood | Operating | 700 000 t/y pulp production |
| Turman SawmillSawmillTurman Sawmill | United States | Softwood | Operating | 50 934 m3/y sawn timber |
| Twin Rivers Plaster RockSawmillTwin Rivers Paper Company | Canada | - | Closed | 237 691 m3/y sawn timber |
| Two Rivers Lumber DemopolisSawmillTwo Rivers Lumber Company | United States | Softwood | Operating | 339 559 m3/y sawn timber |
| UPM AlholmaSawmillUPM Timber | Finland | Softwood | Operating | No data yet |
| UPM EttringenPulp millUPM | Germany | Softwood | Closed 2025 | 280 000 t/y pulp production |
| UPM KaukasSawmillUPM Timber | Finland | Softwood | Operating | No data yet |