| Pietarsaari MillPulp millUPM-Kymmene Oyj | Finland | Mixed | Operating | 800 000 t/y pulp |
| Pine Bluff MillPulp millSuzano Packaging LLC | United States | Mixed | Operating | No data yet |
| Pine Hill MillPulp millInternational Paper | United States | Softwood | Operating | No data yet |
| Piteå MillPulp millSmurfit Westrock | Sweden | Mixed | Operating | No data yet |
| Plymouth MillPulp millDomtar Corporation | United States | Softwood | Operating | 390 000 t/y pulp |
| Pöls MillPulp millHeinzel Group | Austria | Softwood | Operating | 480 000 t/y pulp |
| Pontevedra MillPulp millEnce S.A. | Spain | Hardwood | Operating | 515 000 t/y pulp |
| Port Mellon MillPulp millDomtar | Canada | Softwood | Operating | 380 000 t/y pulp |
| Port Townsend MillPulp millPort Townsend Paper Company | United States | Softwood | Operating | No data yet |
| Port Wentworth MillPulp millGlobal Cellulose Fibers | United States | Softwood | Operating | 300 000 t/y pulp |
| Prattville MillPulp millInternational Paper | United States | Softwood | Operating | No data yet |
| PT Indah Kiat Pulp & Paper (Perawang)Pulp millPT Indah Kiat Pulp & Paper | Indonesia | Hardwood | Operating | 3 000 000 t/y pulp |
| PT OKI Pulp & Paper MillsPulp millAsia Pulp & Paper (APP) | Indonesia | Mixed | Operating | 2 800 000 t/y pulp |
| Puma UnitPulp millKlabin S.A. | Brazil | Mixed | Operating | 1 500 000 t/y pulp |
| Quinnesec MillPulp millBillerud (US operations ex-Verso) | United States | Hardwood | Operating | 210 000 t/y pulp |
| Rauma Pulp MillPulp millMetsä Fibre | Finland | Mixed | Operating | 650 000 t/y pulp |
| Riau Andalan Pulp & PaperPulp millAPRIL | Indonesia | Hardwood | Operating | 4 000 000 t/y pulp |
| Ribas do Rio Pardo MillPulp millSuzano S.A. | Brazil | Hardwood | Operating | 2 550 000 t/y pulp |
| Riegelwood MillPulp millGlobal Cellulose Fibers | United States | Softwood | Operating | 500 000 t/y pulp |
| Riverdale MillPulp millInternational Paper | United States | Mixed | Operating | 700 000 t/y pulp |
| Roanoke Rapids MillPulp millSmurfit Westrock | United States | Softwood | Operating | 505 000 t/y pulp |
| Rosenthal MillPulp millMercer International Inc. | Germany | Softwood | Operating | 360 000 t/y pulp |
| Rumford MillPulp millND Paper (Nine Dragons Paper Holdings Limited subsidiary) | United States | Mixed | Operating | No data yet |
| Ružomberok MillPulp millMondi Group | Slovakia | Mixed | Operating | 666 000 t/y pulp |
| Saiccor MillPulp millSappi Limited | South Africa | Hardwood | Operating | 890 000 t/y pulp |
| Saillat MillPulp millSylvamo Corporation | France | Mixed | Operating | 395 000 t/y pulp |
| Saint John MillPulp millJD Irving Ltd | Canada | Mixed | Operating | 365 000 t/y pulp |
| Saint-Félicien MillPulp millDomtar | Canada | Softwood | Operating | 357 000 t/y pulp |
| Sanguesa MillPulp millSmurfit Kappa Navarra, S.A. | Spain | Softwood | Operating | 85 000 t/y pulp |
| Santa Fe MillPulp millCMPC Celulosa S.A. | Chile | Hardwood | Operating | 1 300 000 t/y pulp |
| Satsumasendai MillPulp millChuetsu Pulp & Paper Co., Ltd. | Japan | Hardwood | Operating | 180 000 t/y pulp |
| Segezha MillPulp millSegezha Group | Russia | Softwood | Operating | 414 000 t/y pulp |
| Seshasayee Paper (SPB)Pulp millSeshasayee Paper and Boards Limited | India | Hardwood | Operating | 154 000 t/y pulp |
| Shouguang MillPulp millShandong Chenming Paper Holdings | China | - | Operating | 1 000 000 t/y pulp |
| Sirpur Paper MillsPulp millJK Paper Limited | India | Hardwood | Operating | No data yet |
| Skärblacka MillPulp millBillerud AB (publ) | Sweden | Mixed | Operating | No data yet |
| Skoghall MillPulp millStora Enso | Sweden | Mixed | Operating | 700 000 t/y pulp |
| Skookumchuck MillPulp millDomtar | Canada | Softwood | Operating | 270 000 t/y pulp |
| Skutskär MillPulp millStora Enso | Sweden | Mixed | Operating | 515 000 t/y pulp |
| Smurfit Nervion Iurreta MillPulp millSmurfit Westrock Nervion, S.A. | Spain | Softwood | Operating | 152 000 t/y pulp |
| Somerset MillPulp millSappi Limited | United States | Softwood | Operating | 525 000 t/y pulp |
| Springfield MillPulp millInternational Paper | United States | Softwood | Operating | No data yet |
| Stendal MillPulp millMercer International Inc. | Germany | Softwood | Operating | 740 000 t/y pulp |
| Štětí MillPulp millMondi Group | Czech Republic | Mixed | Operating | 750 000 t/y pulp |
| Stora Enso Ostroleka MillPulp millStora Enso Poland S.A. | Poland | Softwood | Operating | No data yet |
| Sun Paper NanningPulp millShandong Sun Paper Group | China | Hardwood | Operating | 500 000 t/y pulp |
| Suzano MillPulp millSuzano S.A. | Brazil | Hardwood | Operating | 620 000 t/y pulp |
| Świecie MillPulp millMondi Group | Poland | Softwood | Operating | 500 000 t/y pulp |
| Tamil Nadu Newsprint (TNPL)Pulp millTamil Nadu Newsprint and Papers Limited | India | Hardwood | Operating | No data yet |
| The Pas MillPulp millCanadian Kraft Paper Industries Ltd. | Canada | Softwood | Operating | No data yet |