This study aims to determine the effect of SBI interest rate, gold price, and JCI on Net Asset Value (NAV) of shariah mutual funds partially or simultaneously. This research uses saturated sampling technique that is monthly data from variable interest rate of Bank Indonesia Certificate (X1), gold price (X2), Composite Stock Price Index (X3), and Net Asset Value of Sharia Mutual Fund (Y) in January 2015 - June 2017. The results of this study show partially SBI and IHSG interest rate variables have a significant positive effect on NAV of Islamic mutual funds, while the variable significantly negative effect on NAV of Islamic mutual funds. Simultaneously variable of SBI interest rate, gold price, and IHSG have significant effect to net asset v...