The purpose of this study was determine the effect of Mudharabah and Musyarakah Financing on Financing To Deposit Ratio (FDR) at Islamic Commercial Banks in Indonesia in 2020-2022, on a quarterly basis. This study uses quantitative methods using secondary data in the form of quarterly financial reports of Islamic Commercial Banks in 2020-2022. Data analysis using descriptive statistics, classical assumption test, multiple linear regression analysis, t-test, F-test, and coefficient of determination through the IBM SPSS 25. The results revealed that mudharabah financing partially had a significant effect on the Financing To Deposit Ratio (FDR) at Islamic Commercial Banks in Indonesia in 2020-2022. On the other hand, musyarakah financing partially has no significant effect on the Financing To Deposit Ratio (FDR) of Islamic Commercial Banks in Indonesia in 2020-2022. Meanwhile, mudharabah and musyarakah financing simultaneously affect the Financing To Deposit Ratio (FDR) at Islamic Commercial Banks in Indonesia in 2020-2022.