The purpose of this study is to examine the factors that influence firm value in manufacturing companies listed on the Jakarta Islamic Index (JII) for the 2015-2019 period. This study examines the effect of financial leverage, size, asset structure and corporate governance on firm value as measured by price to book value. The sample was determined by purposive sampling method and obtained 50 observation data. Research data collected form documentaion form the company’s annual report. The analysis technique used is multiple regression analysis. The results show that financial leverage, size, asset structure and corporate governance have a positive and significant effect on firm value. Financial leverage ratio encourage the company to pay off the liability, so cab be said that the manufacturs company do the best perfomance to create firm value. Size have positive impact to firm value. The big size company can denote the growth of the company and make the positif signal for investor. The Assets Structure has positive impact on firm value indicating that the assets structure is used optimally, it will increase the company’s return. Corporate Goverance has a positve effect on firm value where CEO Duality as indicator of corporate governance provide the strenght for top management and Independen Commisioner indicates the ability of the bord commissonerstoo make decisons more objectively.