This study aims to determine the effect of profitability, investment decisions, funding decisions, and dividend policy on firm value. This study uses a population of all manufacturing companies listed on the Indonesia Stock Exchange in the 2018-2020 period. The number of manufacturing companies sampled using the purposive sampling method was obtained as many as 41 companies with a research period of 3 years. This study uses quantitative methods with secondary data sources in the form of complete company annual financial statements. The analytical technique used is multiple linear regression analysis. The results of hypothesis testing indicate that profitability, funding decisions, and dividend policy have a significant positive effect on firm value, while investment decisions have no effect on firm value.