The purpose of this study was to analyze telecommunications infrastructure, roads, clean water, and electricity that have a significant effect both partially and simultaneously on the GRDP of Mataram City in 2012-2021. In this study using associative method with a quantitative approach. The analytical method used in this study is multiple regression analysis with hypothesis testing and using the t test (partial test), F test (simultaneous test), test the coefficient of determination (R2) with a significant level of 5% and classical assumption testing. The partial results of the study show that telecommunication and road infrastructure have no significant effect on GRDP, while clean water and electricity infrastructure have a significant effect on GRDP. Simultaneously, it shows that telecommunication infrastructure, roads, clean water, and electricity have a positive and significant relationship to GRDP. The value of the coefficient of determination (R¬2) of 95.6% is influenced by the dependent variable (X) while the rest is influenced by other variables outside the model. Based on the econometric reference test in this study, there was no deviation from the classical assumptions.