This study proposes an e-government adoption model to determine the factors which lead to citizens' adoption of e-government services in the Togolese context while investigating the mediating roles of perceived usefulness and perceived ease of use. The proposed model was tested using valid and reliable data gathered from a sample of 482 respondents. Findings indicate that behavioral intention to use e-government services is significantly influenced by perceived usefulness and perceived ease of use. More importantly, the analysis revealed that, perceived usefulness and perceived ease of use play a mediating role, either full or partial between the antecedent variables, social influence, trustworthiness and facilitating conditions and the outcome variable, behavioral intention to use. The implementation of e-government services with a focus on these fundamental factors will eventually increase the acceptance and adoption of such services by citizens.