Keman, GökçeAvcı, Pınar2024-10-292024-10-2920242509-7873https://doi.org/10.1007/978-981-99-9145-7_11https://hdl.handle.net/20.500.11776/12341Due to the globalization process in the world, many developments in the economic system increase the competition between companies. The increase of competition makes the corporate governanceGovernance practices important in terms of firm value and performance. Therefore, our aim in this study is to examine the effect of corporate governanceGovernance practices on firm value and performance. The study is based on companies in Istanbul Stock Exchange (ISE) Corporate GovernanceGovernance Index in Turkey. The panel data of 34 companies in the ISE Corporate GovernanceGovernance Index for the period 2015–2019 are gathered. Unit root test, Granger causality test, and regression analysis are performed within the scope of panel data analysis and the findings are interpreted in the study. The results showed that the increase of the corporate governanceGovernance practices of companies affects the value and performance of the company significantly and positively. In addition, it was found that the increase in the current ratio, debt ratio, and equity growth rate of the firm has a significant and positive effect on the value and performance of the firms while the increase in the size of the firm has a significant and negative effect. To sum up, it is revealed that firms’ activities within the framework of the principles of transparency, equality, accountability, and responsibility affects firm value and performance in a strongly positive way. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.en10.1007/978-981-99-9145-7_11info:eu-repo/semantics/closedAccessCorporate governanceFirm performanceFirm valuePanel data analysisBook ChapterPart F24032192382-s2.0-85188807247N/A