This study aims to identify the key and leading sectors of Alborz Province as a tool for fostering production and employment development. The input-output table, one of the most effective tools for analyzing economic structures, has been used to determine intersectoral linkages. Due to statistical limitations at the provincial level, this research utilized the non-statistical MFLQ method and calculated the input-output table of Alborz Province based on the latest national table from 1395. The results indicate that the industrial sector has been identified as the leading sector of Alborz Province. This sector, due to its strong linkages with other economic sectors, has the most significant impact on the province's production and employment. Moreover, six subsectors, namely "paper production and paper products, printing, and reproduction of recorded media," "rubber and plastic products manufacturing," "fabricated metal products manufacturing, excluding machinery and equipment," "electrical equipment manufacturing," "motor vehicles, trailers, and semi-trailers manufacturing," and "other manufactured products," have been identified as the leading subsectors in Alborz Province's industry. Based on these findings, the following policy recommendations are proposed: developing industrial infrastructure, providing targeted support for leading industries, and enhancing export capacities. These actions can play a significant role in improving productivity and achieving sustainable economic growth in the province.