Abstract: This study aims to determine whether the dimensions of online consumer reviews consisting of source credibility, review quality, review quantity, review valence affect the online purchases intention in Tokopedia. The population in this study were all Tokopedia application users, while the sample in this study were users who made purchases using the Tokopedia application in the last 2 months with a total sample of 190 respondents. This study uses multiple linear regression analysis to determine the effect of source credibility, review quality, review quantity, review valence on purchase intentions. The results of this study indicate that the source credibility, review quality and review valence partially have a significant effect on purchase intentions, while the review quantity has no significant effect on purchase intentions.