Domtar Corporation is a leading, privately held manufacturer of diversified forest products, with a workforce of roughly 14,000 employees in more than 60 locations across North America.

While Domtar operated independently for several decades and was listed on the Toronto and New York stock exchanges, the company was acquired by owner Jackson Wijaya's Paper Excellence Group in November 2021 and operated as a subsidiary until 2024 when Paper Excellence merged its companies under the Domtar name.

The company has an annual capacity of 9.1 million metric tons of pulp, paper, packaging and tissue annually, and has an annual production capacity of about 3 billion board feet of lumber and other wood products. Formerly known as the Paper Excellence Group, Domtar comprises legacy businesses Paper Excellence Canada Holdings Corporation, Domtar Corporation and Resolute Forest Products.

Specifically, Domtar 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. Additionally, they manufacture wood pulp, tissue, 100 percent recycled packaging, lumber and engineered wood products used everyday around the world.

Domtar owns and operates Domtar Distribution Group, an extensive network of paper distribution facilities. Its head offices are in Montreal, Quebec, and Fort Mill, South Carolina.

In 1848, Henry Potter Burt founded Burt, Boulton Holdings Ltd. in England, a company that specialized in treating timber against rot from moisture. The company used substances, such as creosote derived from coal tar, to prolong lumber's useful life, supplying railway ties and pilings for wharves and foundations throughout Europe and the British Empire. Within eleven years Burt, Boulton was exporting to North America and acquired a sawmill in Quebec's Eastern Townships.

In the nineteenth and early twentieth centuries there was an ever-increasing source of coal tar and a demand for treated wood. Growth continued for Burt, Boulton Holdings Ltd. and led to the founding of a new company on February 4, 1903. It was called the Dominion Tar and Chemical Company, Limited. Dominion Tar's first plant was located in Sydney, Nova Scotia, and began operations just eight months later.

In 1910, the company obtained two major contracts. The first, from the Canadian Pacific Railway, was to treat railway ties, and the second, with the Lake Superior Iron & Steel Company (a predecessor of Algoma Steel), was to process tar produced from the coke ovens at its Sault Ste. Marie, Ontario mill. This required the financing of two new plants at opposite ends of Eastern Canada. Burt, Boulton retained the majority of shares in the company but took on Senator John S. McLennan from Nova Scotia and Drummond, McCall & Co. of Montreal as the corporation's first Canadian shareholders.