<p><em>This study aims to determine the effect of asset structure, company growth, liquidity, firm age, level of profitability, and temporary syirkah funds on the capital structure of Islamic banking in Indonesia. The population in this study are all banking companies registered with the Otoritas Jasa Keuangan in 2016-2020, namely 14 companies. By using a purposive sampling technique, there are nine sharia commercial banks that will be sampled in this study. This type of research is quantitative research using secondary data, namely annual reports of Islamic commercial banks and data analysis techniques with multiple linear regression using the SPSS 23 application. The results show that profitability and liquidity have a significant and negative effect on capital structure. Meanwhile, asset structure, company growth, company age, and temporary syirkah funds have no effect on capital structure.</em></p>