The forest sector is in constant development. It is responsible for a growing contribution to the Brazilian gross domestic product. New jobs are generated each year, with the establishment of factories and branches, and the purchase of new planting areas by large companies, including areas of permanent protection. The objective of this work was to generate a ranking model to determine the influence and importance of companies for the country's forestry and industrial sector. The profiles of more than 40 companies of the branch were analyzed, all associated of the Brazilian Industry of Trees. We selected 20 of them based on the annual billing, planting area, protection area, generation of jobs and social investments. A score was given for each criterion (varying from 1 to 20). A business ranking matrix of the Brazilian forestry sector was obtained, with values to calculate the efficiency index. This model can be used by any other industrial sector, and it is only necessary to replace the criteria of planted area and preserved area for the production specificities of the sector in question.