This paper examines the regulation of corporate governance on leverage structure decision-making in Bangladesh from 2003 to 2017. Appropriate panel methods are employed to control the problems of serial correlation, heteroskedasticity, and the cross-sectional nature of manufacturing companies. The study finds that corporate governance attributes such as board size, managerial ownership, and duality are the dominant factors for leverage decision-making. The results also indicate that control variables such as firm size and profitability have an influential role on leverage decision-making in Bangladesh. Our findings substantiate the idea that political and family connections to corporate governance structure greatly influence the leverage decision-making of corporate firms in Bangladesh. Int. J. Financial Stud. 2019, 7, 50 2 of 16 weak corporate governance, such as family issues, institutional issues, political affiliation, corruption, and the lack of a sense of responsibility and accountability. In this circumstance, financial managers cannot freely make optimal financial decisions in terms of firm value and sustainability. Weak financial decision-making incurs a great deal of loss, which threatens sustainability. The previous studies also consider only primary data, and, to the best of our knowledge, they did not consider the main corporate governance attributes of board size, board composition, board independence, managerial ownership, institutional shares, and CEO duality from secondary data. Hence, the relationship between corporate governance and leverage structure decision-making in Bangladesh has not been fully explored. In this respect, in Bangladesh, there is an urgent need to determine whether corporate governance has any impact on leverage structure decision-making or not.We have investigated the manufacturing sector for several reasons: First, past literature has been primarily dedicated to the analysis of developed countries and there are very few studies focused on developing countries such as Bangladesh. Second, Bangladesh has been experiencing embezzlement in capital markets resulting from political weaponry and government intervention. These consequences radically affect the financial decision-making of manufacturing companies in Bangladesh. Third, the manufacturing sector provides the basic needs of people and fuels economic growth in Bangladesh, and it is highly vulnerable due to a lack of high-quality corporate governance. Poor accounting and auditing standards, bad accountability, low transparency, managerial inefficiency, and political turmoil (Pontines and Siregar 2008) have led to the poor sustainable development of the sector.The major contributions of the paper are designed to add new insights to the current literature: (i) The previous literature on this subject in Bangladesh is few and partial. To the best of our knowledge, research in this area was initiated by Haque et al. 2011 on the qualitative factors of corporate governance in Bangladesh. The most influential variables for c...