| Arboreal TacuaremboSawmillArboreal S.A. | Uruguay | - | Operating | 70 000 m3/y sawn timberestimated from 140 000 m3/y log intake |
| ArborTech Forest ProductsSawmillArborTech Forest Products | United States | Softwood | Operating | No data yet |
| Archimbaud (Secondigné-sur-Belle)SawmillScierie Archimbaud | France | - | Operating | 164 000 m3/y sawn timber |
| Arkhangelsk MillPulp millPulp Mill Holding GmbH | Russia | Mixed | Operating | 870 000 t/y pulp production |
| Asahikawa MillPulp millNippon Paper Industries Co., Ltd. | Japan | Softwood | Operating | 278 860 t/y pulp production |
| Aserradero de Valsaín (Real Aserrío / Montes de Valsaín)SawmillOrganismo Autónomo Parques Nacionales - Centro Montes y Aserradero de Valsaín | Spain | - | Operating | 10 000 m3/y sawn timber |
| Aserradero Sierra de CazorlaSawmillAserradero Sierra de Cazorla S.L. | Spain | - | Operating | No data yet |
| Aserraderos Blocks and CutstockSawmillAserraderos Blocks and Cutstock SpA | Chile | - | Operating | No data yet |
| Aserraderos Cerro ColoradoSawmillAserraderos Cerro Colorado S.A. | Chile | - | Operating | No data yet |
| Aserraderos de CuéllarSawmillAserraderos de Cuéllar S.A. | Spain | - | Operating | No data yet |
| Aserraderos JCESawmillAserraderos JCE S.A. | Chile | Softwood | Operating | No data yet |
| Aserraderos LoncocheSawmillAserraderos Loncoche S.A. | Chile | - | Operating | No data yet |
| Aserraderos MestreSawmillAserraderos Mestre S.A. | Chile | - | Operating | No data yet |
| Ashdown MillPulp millDomtar | United States | Softwood | Operating | 700 000 t/y pulp production |
| Asia Symbol (Shandong)Pulp millAsia Symbol | China | Hardwood | Operating | 2 200 000 t/y pulp production |
| Aspa MillPulp millSweden Timber / Aspa Pulp | Sweden | Softwood | Operating | 200 000 t/y pulp production |
| Aspen Planers MerrittSawmillAspen Planers Ltd. | Canada | - | Idled 2025 | 366 723 m3/y sawn timber |
| ATA Timber ÅbodaSawmillATA Timber AB | Sweden | - | Operating | 60 000 m3/y sawn timber |
| ATA Timber EnerydaSawmillATA Timber AB | Sweden | - | Operating | 50 000 m3/y sawn timber |
| ATA Timber MohedaSawmillATA Timber AB | Sweden | - | Operating | 155 000 m3/y sawn timber |
| ATA Timber RörvikSawmillATA Timber R-vik AB | Sweden | Softwood | Operating | 100 000 m3/y sawn timber |
| ATA Timber SandsjöforsSawmillATA Timber AB | Sweden | - | Operating | 100 000 m3/y sawn timber |
| ATA Timber WidtsköfleSawmillATA Timber AB | Sweden | - | Operating | 75 000 m3/y sawn timber |
| Atholville MillPulp millAditya Birla Group | Canada | Hardwood | Operating | 150 000 t/y pulp production |
| Augsburg MillPulp millUPM-Kymmene Oyj | Germany | Softwood | Operating | 350 000 t/y pulp production |
| Aureskosken JalostetehdasSawmillAureskosken Jalostetehdas Oy | Finland | Softwood | Operating | 120 000 m3/y |
| Aurnhammer EllwangenSawmillAurnhammer | Germany | - | Operating | 45 000 m3/y sawn timberestimated from 90 000 m3/y log intake |
| Ayuntamiento de Cuenca Maderas (Maderas Cuenca / ACMSA)SawmillAyuntamiento de Cuenca Maderas S.A. | Spain | Softwood | Operating | 15 000 m3/y sawn timberestimated from 30 000 m3/y log intake |
| Babine Forest Products (Burns Lake)SawmillBabine Forest Products Ltd. | Canada | - | Operating | 368 421 m3/y sawn timber |
| Bäckebo SågverkSawmillBäckebo Sågverk Jarl Franzén AB | Sweden | Softwood | Operating | No data yet |
| Bäckhammar MillPulp millNordic Paper AB | Sweden | Softwood | Operating | 190 000 t/y pulp production |
| Bai Bang Paper MillPulp millVietnam Paper Corporation (VINAPACO) | Vietnam | Hardwood | Operating | 300 000 t/y pulp production |
| Balcas EnniskillenSawmillBalcas Ltd | United Kingdom | - | Operating | 300 000 m3/y sawn timber |
| Ballarpur Industries (BILT)Pulp millFinquest Group | India | Hardwood | Operating | 300 000 t/y pulp production |
| Balungstrands sågverkSawmillBalungstrands Sågverk AB | Sweden | Softwood | Operating | 110 000 m3/y sawn timber |
| Baoji MillPulp millShaanxi Baoji Wuyi General Paper Mill | China | - | Operating | 800 000 t/y pulp production |
| Barrette-ChapaisSawmillBarrette-Chapais Ltee | Canada | - | Operating | No data yet |
| Barrus VõruSawmillAS Barrus | Estonia | Softwood | Operating | 130 000 m3/y sawn timber |
| Barthel Pauls Söhne AG (Büllingen)SawmillBarthel Pauls Söhne AG | Belgium | Softwood | Operating | 250 000 m3/y sawn timberestimated from 500 000 m3/y log intake |
| Battistella Rio NegrinhoSawmillBattistella Industria e Comercio Ltda. | Brazil | Softwood | Operating | No data yet |
| Battle LumberSawmillBattle Lumber Company | United States | Mixed | Operating | No data yet |
| Beasley Forest ProductsSawmillBeasley Forest Products | United States | - | Operating | No data yet |
| Beckmann Holzwerk EsloheSawmillEwald Beckmann GmbH & Co. (Baust Beckmann) | Germany | Softwood | Operating | 45 000 m3/y sawn timberestimated from 90 000 m3/y log intake |
| Begna BrukSawmillBegna Bruk AS | Norway | Softwood | Operating | 200 000 m3/y |
| Beihai MillPulp millStora Enso | China | Hardwood | Operating | 200 000 t/y pulp production |
| Beihai ParkPulp millGuangxi Sun Paper | China | Hardwood | Operating | 1 400 000 t/y pulp production |
| Belo Oriente MillPulp millJapan Brazil Paper and Pulp Resources Development Co., Ltd. (JBP) | Brazil | Hardwood | Operating | 1 200 000 t/y pulp production |
| Bely RucheySawmillAO Bely Ruchey | Russia | - | Operating | No data yet |
| Bennett Lumber PrincetonSawmillBennett Lumber Products | United States | - | Operating | No data yet |
| Bentheimer Holz Bad BentheimSawmillBentheimer Holz GmbH | Germany | - | Operating | 80 000 m3/y sawn timberestimated from 160 000 m3/y log intake |