The American Writing Paper Company was an American pulp and paper producing company trust, primarily manufacturing printing and writing paper. Incorporated in New Jersey in 1899 and representing the merging of 23 rag paper mills, the company held its general offices in Holyoke, Massachusetts which was also the location of 13 of these mills. At its peak output American Writing Paper produced 75% of all fine papers in the United States; contemporary accounts describe it as the largest producer of fine papers in the world.