Return On Investmet gauges the company’s ablity in generating profits with the rest of the available assets in the company. To see how big the resulting profit level over a number of investments that have been implanted.Return On Investmet can be categorized as bad or good can be reflected in the results of the calculation of Net Working Capital Turnover and Total Asset Turnover. Net Working Capital Turnover and Total Asset Turnover is the independent variable that authors use in research.This research conducted to test the influence of variabel Net Working Capital Turnover and Total Asset Turnover against Return On Investment. Research done to two companies listed at the IDX in the period 2009-2013.Research methods using samples to two companies listed in IDX in the period 2009-2013. The data obtained based on the publication of IDX period 2009-2013. Engineering analysis is the simple regression and hypothesis tests using t-statistics and f-statistic for testing the regression coefficients are simultaneously with 5% significance level.The results of the analysis show that variable Net Working Capital Turnover to simultaneously influential significantly to Return On Investment. And the results of the analysis of Total Asset Turnover also simultaneously influential significantly to Return On Investment.Key word: Net Working Capital, Total Asset Turnover, Return on Investment