Domtar Corporation is the largest integrated producer of uncoated free-sheet paper in North America and the second largest in the world based on production capacity, and is also a manufacturer of papergrade pulp.

The firm designs, manufactures, markets and distributes a wide range of business, commercial printing, publication as well as technical and specialty papers with recognized brands such as Cougar, Lynx Opaque Ultra, Husky Opaque Offset, First Choice, Sandpiper (premium 100% recycled unbleached), and Domtar EarthChoice Office Paper, part of a family of environmentally and socially responsible papers.

Domtar owns and operates Domtar Distribution Group, an extensive network of paper distribution facilities. The company overall employs nearly 10,000 people. Its head offices are in Montreal and Fort Mill, South Carolina. After a 2006 merger with US-based Weyerhaeuser, Domtar is not viewed as a Canadian entity and does not qualify for inclusion in Canadian stock indexes.