This thesis draws on electronic government (e-govemment) policy formulation, implementation and execution. IT has been enthused by the perceived lack of a model for e-government in Saudi Arabia public sectors. A model for e-government implementation is developed for Saudi Arabia. It examines critical factors that have impacts on e-government implementation in Saudi public sectors by collecting and analysing data in both quantitative and qualitative approaches, and further presenting an extensive review on literature. This exercise is significant, to avoid the pitfalls of imposing universal approaches to research and policy practices. The conclusions and recommendations of this research are significant for both practitioners, in providing guidelines for e-government implementation, and scholars, in suggesting further research in the new area of e-government.