The current paper conducted a critical analysis on the studies that have been carried out in both developing and developed countries regarding the adoption of e-learning technology based on the Unified Theory of Acceptance and Use of Technology (UTAUT2). The findings indicated that the UTAUT2 model is highly influential for all the models such as UTAUT, TAM and TRA. Moreover, most of the studies indicated that effort expectancy, performance expectancy, social influence, facilitating conditions, habit and Hedonic motivation affect positively and significantly on the Behavioral intention to adopt e-learning technology