This research is entitled “Analysis of Several Factors Affecting the Money Supply in Indonesia. The purpose of this study was to analyze the effect of independent variables including interest rates, inflation and investment on the money supply in Indonesia. In this study, multiple linear regression analysis was used with the Ordinary Least Square (OLS) model. To analyze using secondary data in the form of the period 2002-2020 from the Central Statistics Agency (BPS) and several other relevant sources. in Indonesia