The aim of this research was to develop and validate a model which was designed to be useful for many countries considering delivery of mobile government (m-Government) services as the literature had not revealed any comprehensive model that is specifically used in the m-Government services context. The existence of this gap encouraged this research to empirically test and validate the combination of the Diffusion of Innovations (DOI) model and the Technology Acceptance Model (TAM) as well as external variables including Perceived Security, Perceived Trustworthiness, Perceived Enjoyment and Personal Innovativeness. Therefore, in order to fill the gap, this research developed a validated Model with relevant hypotheses which was tested for its predictive value.