| | | | | | | | |
| Name | | Jurisdiction |
| Glatfelter Corporation (parent) | | U.S. (Pennsylvania) |
| Glatfelter Advanced Materials N.A., LLC | | U.S. (Delaware) |
| Glatfelter Caerphilly, Ltd. | | United Kingdom |
| Glatfelter Costa Rica, S.r.l. | | Costa Rica |
| Glatfelter Composite Fibers NA, Inc. | | U.S. (Delaware) |
| Glatfelter Dresden GmbH | | Germany |
| Glatfelter Falkenhagen GmbH | | Germany |
| Glatfelter Gatineau Ltèe | | Canada |
| Glatfelter Gernsbach GmbH | | Germany |
| Glatfelter Holdings, LLC | | U.S. (Delaware) |
| Glatfelter Ireland Limited | | Ireland |
| Glatfelter Italia SRL | | Italy |
| Glatfelter Luxembourg S.à.r.l. | | Luxembourg |
| Glatfelter Luxembourg Services S.à.r.l. | | Luxembourg |
| Glatfelter Lydney, Ltd. | | United Kingdom |
| Glatfelter Malta Limited | | Malta |
| Glatfelter Mt Holly LLC | | U.S. (Delaware) |
| Glatfelter Ober-Schmitten GmbH | | Germany |
| Glatfelter Russia LLC | | Russia |
| Glatfelter Scaër SAS | | France |
| Glatfelter Steinfurt GmbH | | Germany |
| Glatfelter Switzerland S.à.r.l | | Switzerland |
| Glatfelter Trade (Suzhou) Co., Ltd. | | China |
| Newtech Pulp, Inc. | | Philippines |
| PHG Tea Leaves, Inc. | | U.S. (Delaware) |
| Glatfelter Holding (Switzerland) AG | | Switzerland |
| Glatfelter Holding (Denmark) A/S | | Denmark |
| Glatfelter Denmark A/S | | Denmark |
| Glatfelter Holding (Luxembourg) AG | | Luxembourg |
| Glatfelter Sontara South Asia Sdn. Bhd. | | Malaysia |
| Glatfelter Sontara Korea Co., Ltd. | | Korea |
| Glatfelter Sontara Nonwovens (Shanghai) Co., Ltd. | | China |
| Glatfelter Mexico S.A. de C.V. | | Mexico |
| Glatfelter Sontara Argentina S.R.L. | | Argentina |
| Glatfelter Industries Asheville, Inc. | | USA |
| Glatfelter Industries (France) SAS | | France |
| Glatfelter Sontara America, Inc. | | USA |