| Biganos MillPulp millSmurfit Westrock | France | Softwood | Operating | 450 000 t/y pulp production |
| Cali Mill (Yumbo)Pulp millSmurfit Kappa Carton de Colombia S.A. | Colombia | Mixed | Operating | 350 000 t/y pulp production |
| Covington MillPulp millSmurfit Westrock | United States | Softwood | Operating | 560 000 t/y pulp production |
| Demopolis MillPulp millWestRock Mill Company, LLC | United States | Softwood | Operating | No data yet |
| Fernandina MillPulp millSmurfit Westrock | United States | Softwood | Operating | No data yet |
| Florence MillPulp millSmurfit Westrock | United States | Softwood | Operating | No data yet |
| Hodge MillPulp millSmurfit Westrock | United States | Softwood | Operating | No data yet |
| Hopewell MillPulp millSmurfit Westrock | United States | Mixed | Operating | 500 000 t/y pulp production |
| La Tuque MillPulp millWestrock du Canada Corp. | Canada | - | Operating | No data yet |
| Longview MillPulp millSmurfit Westrock | United States | Softwood | Operating | No data yet |
| Mahrt MillPulp millSmurfit Westrock | United States | Mixed | Operating | 710 000 t/y pulp production |
| Nettingsdorf MillPulp millSmurfit Westrock Nettingsdorf AG & Co KG | Austria | Softwood | Operating | No data yet |
| Piteå MillPulp millSmurfit Westrock | Sweden | Mixed | Operating | No data yet |
| Roanoke Rapids MillPulp millSmurfit Westrock | United States | Softwood | Operating | 505 000 t/y pulp production |
| Sanguesa MillPulp millSmurfit Kappa Navarra, S.A. | Spain | Softwood | Operating | No data yet |
| Smurfit Nervion Iurreta MillPulp millSmurfit Westrock Nervion, S.A. | Spain | Softwood | Operating | 152 000 t/y pulp production |
| Stevenson MillPulp millWestRock CP, LLC | United States | - | Operating | No data yet |
| Tres Barras MillPulp millSmurfit Westrock Brasil | Brazil | Mixed | Operating | No data yet |
| West Point MillPulp millWestRock CP, LLC | United States | Softwood | Operating | No data yet |
| WestRock Evadale MillPulp millSmurfit Westrock | United States | Mixed | Operating | 125 000 t/y pulp production |