As e-commerce diffused rapidly, online trust has been recognized as an important factor to determine purchase decisions of online customers. However, alternative perspectives on online trust were continuously issued such as the role of distrust and contextual dependance of online trust.This study performed a meta-analysis with 72 studies (out of 66 articles) dealing with online trust and purchase intention, which published in Korea and U.S.A. According to the results of the meta-analysis, online trust has a significant impact on purchase intention. However, the impact is varying depending on research contexts. The moderators found in the meta-analysis are site designation and national culture. A couple of suggestions for the future online trust research are (1) in designing an empirical study, the decision to use a specific website or general opinion on online shopping should be carefully considered, (2) in setting a research model studying online trust, national culture should be explicitly specified in the model.