| Schaffer Sägewerk-Holzexport EppensteinSawmillSchaffer Sägewerk-Holzexport GmbH | Austria | Softwood | Operating | 55 000 m3/y sawn timberestimated from 110 000 m3/y log intake |
| Schibi HolzSawmillSchibi-Holz AG | Switzerland | Softwood | Operating | No data yet |
| Schilliger Bois (Volgelsheim)SawmillSchilliger Bois SAS | France | Softwood | Operating | 250 000 m3/y sawn timber |
| Schilliger Holz KüssnachtSawmillSchilliger Holz AG | Switzerland | Softwood | Operating | 100 000 m3/y sawn timberestimated from 200 000 m3/y log intake |
| Schmidbauer Lumber EurekaSawmillSchmidbauer Lumber | United States | Softwood | Operating | No data yet |
| Schößwendter Holz SaalfeldenSawmillSchößwendter Holz | Austria | Softwood | Operating | 140 000 m3/y sawn timberestimated from 280 000 m3/y log intake |
| Schwaiger HengersbergSawmillSchwaiger Holzindustrie GmbH & Co. KG | Germany | Softwood | Operating | 590 000 m3/y sawn timberestimated from 1 180 000 m3/y log intake |
| SchwoererHaus Saegewerk HohensteinSawmillSchwoererHaus KG | Germany | Softwood | Operating | 100 000 m3/y sawn timberestimated from 200 000 m3/y log intake |
| Scierie Alexandre Lemay & Fils (Sainte-Marie)SawmillScierie Alexandre Lemay & Fils inc. | Canada | - | Operating | 112 000 m3/y sawn timberestimated from 223 500 m3/y log intake |
| Scierie Chauvin (Mignovillard)SawmillScierie Chauvin Frères | France | Softwood | Operating | 90 000 m3/y sawn timberestimated from 180 000 m3/y log intake |
| Scierie du Lac-Saint-Jean (Métabetchouan-Lac-à-la-Croix)SawmillLes Scieries du Lac St-Jean inc. | Canada | - | Operating | 128 000 m3/y sawn timberestimated from 255 000 m3/y log intake |
| Scierie Girard (Shipshaw, Saguenay)SawmillScierie Girard inc. | Canada | Softwood | Operating | 190 000 m3/y sawn timberestimated from 380 000 m3/y log intake |
| Scierie Labadie (Arue)SawmillScierie Labadie | France | Softwood | Operating | 35 000 m3/y sawn timber |
| Scierie Mathieu (Xonrupt-Longemer)SawmillScierie Jean Mathieu | France | Softwood | Operating | 20 000 m3/y sawn timberestimated from 40 000 m3/y log intake |
| Scierie Moulin (Dunières)SawmillScierie Moulin | France | Softwood | Operating | 71 000 m3/y sawn timber |
| Scierie Raboterie Lemaire (Vosges)SawmillScierie Raboterie Lemaire | France | Softwood | Operating | 300 000 m3/y sawn timber |
| Scierie St-Elzéar (Saint-Elzéar)SawmillScierie St-Elzéar inc. | Canada | Softwood | Operating | 120 000 m3/y sawn timberestimated from 240 000 m3/y log intake |
| Scierie St-MichelSawmillScierie St-Michel Inc. | Canada | Softwood | Operating | No data yet |
| Scierie Zahnd SA (Rueyres)SawmillScierie Zahnd S.A. | Switzerland | Softwood | Operating | 85 000 m3/y sawn timberestimated from 170 000 m3/y log intake |
| Scieries des Gardes (Felletin)SawmillScieries des Gardes (SDG) | France | - | Operating | 50 000 m3/y sawn timber |
| Scotsburn Lumber (Scotsburn)SawmillScotsburn Lumber Ltd. | Canada | - | Operating | No data yet |
| Segezha Sawmills (Segezhsky LDK)SawmillSegezha Sawmills | Russia | Softwood | Closed 2022 | No data yet |
| Segheria Varesco FratelliSawmillSegheria Varesco Fratelli S.r.l. (Varesco Legno) | Italy | Mixed | Operating | No data yet |
| Šerif Grupa - pilana Malo Selo (Gorski kotar)SawmillŠerif export-import d.o.o. | Croatia | Mixed | Operating | 15 000 m3/y sawn timberestimated from 30 000 m3/y log intake |
| Serração Moderna de LamelasSawmillSerração Moderna de Lamelas Lda. | Portugal | Softwood | Operating | No data yet |
| Serradora Boix (Puig-reig)SawmillSerradora Boix S.L. | Spain | Softwood | Operating | 85 000 m3/y sawn timber |
| Serradora CampamàSawmillSerradora Campamà S.L. | Spain | Softwood | Operating | No data yet |
| Serradora CornellàSawmillSerradora Cornellà S.L. | Spain | Softwood | Operating | No data yet |
| Serradora Forestal de CatalunyaSawmillSerradora Forestal de Catalunya S.L.U. | Spain | - | Operating | No data yet |
| Serrería Larrañaga (Azpeitia)SawmillSerreria Larrañaga S.L. | Spain | - | Operating | No data yet |
| Serrerías GaroleraSawmillSerrerías Garolera S.L. | Spain | Softwood | Operating | No data yet |
| Setles sawmill (ex Stora Enso Impilahti)SawmillOOO Setles | Russia | Softwood | Operating | 165 000 m3/y sawn timber |
| Setnovo sawmill (ex Stora Enso Nebolchi)SawmillOOO Setnovo | Russia | Softwood | Operating | 180 000 m3/y sawn timber |
| Setra FärilaSawmillSetra Trävaror AB | Sweden | Softwood | Operating | 216 000 m3/y sawn timber |
| Setra HasselforsSawmillSetra Trävaror AB | Sweden | Softwood | Operating | 320 000 m3/y sawn timber |
| Setra HebySawmillSetra Trävaror AB | Sweden | Softwood | Operating | 276 000 m3/y sawn timber |
| Setra KastetSawmillSetra Trävaror AB | Sweden | Softwood | Operating | 270 000 m3/y sawn timber |
| Setra NybySawmillSetra Trävaror AB | Sweden | Softwood | Operating | 197 000 m3/y sawn timber |
| Setra SkinnskattebergSawmillSetra Trävaror AB | Sweden | Softwood | Operating | 249 000 m3/y sawn timber |
| SevLesPil SyktyvkarSawmillOOO SevLesPil | Russia | Softwood | Operating | 250 000 m3/y sawn timber |
| Sexton Lumber BloomfieldSawmillSexton Lumber Co Limited | Canada | Softwood | Operating | 136 000 m3/y sawn timber |
| Sguario Madeiras sågverkSawmillSguario Madeiras | Brazil | Softwood | Operating | No data yet |
| Shuqualak LumberSawmillShuqualak Lumber Company | United States | Softwood | Operating | 212 000 m3/y sawn timber |
| Siat Braun (Urmatt)SawmillSiat Braun | France | Softwood | Operating | No data yet |
| Sierra Forest Products Terra BellaSawmillSierra Forest Products | United States | Softwood | Operating | No data yet |
| Sierra Pacific (Seneca) EugeneSawmillSeneca Sawmill Company | United States | Softwood | Operating | 594 000 m3/y sawn timber |
| Sierra Pacific (Seneca) NotiSawmillSeneca Sawmill Company | United States | Softwood | Operating | No data yet |
| Sierra Pacific AberdeenSawmillSierra Pacific Industries | United States | Softwood | Operating | No data yet |
| Sierra Pacific AndersonSawmillSierra Pacific Industries | United States | Softwood | Operating | No data yet |
| Sierra Pacific BurlingtonSawmillSierra Pacific Industries | United States | Softwood | Operating | No data yet |