This study aims to determine the effect of institutional ownership, managerial ownership, and dividend policy on the firm value of basic industry and chemical companies listed in the Indonesia Stock Exchange between 2017 and 2019. This study utilises institutional ownership percentages to measure institutional ownership variable, managerial ownership percentages to measure managerial ownership variable, dividend payout ratio to measures dividend policy variable, and tobin's q ratio measures firm value. This type of research includes quantitative research with secondary data sources in the form of annual reports. There are 63 samples of 21 companies with predertemined criteria, selected through purposive sampling from a total of 80 companies, observed in a 3-year period (2017)(2018)(2019). The results of the hypotheses analysis utilising multiple linear regression reveal that institutional ownership has no effect on firm value, managerial ownership has a positive and significant effect on firm value, and dividend policy has a negative and significant effect on firm value.