The purpose of this study was to investigate the effect of perceived attributes of innovation, that is, relative advantage, compatibility, complexity, trialability and observability on learners' use of mobile learning. Specifically, this study employed structural equation modeling in order to examine the causal relationships among perceived attributes of innovation, learners' intention to use mobile learning and the actual use of mobile learning. Analysis of 200 college student respondents who registered for a course offered by an online university in South Korea revealed that relative advantage and complexity had significant effects on the intention to use mobile learning, whereas trialability and observability did not. Further, the intention to use mobile learning had a direct positive effect on learners' actual use of mobile learning.