e-Government is a research topic that arouses the interest of many researchers all around the world. So, we can find a large number of studies and research projects published about this topic. Given the large number of articles that exist in the literature, it is not possible to get an idea of the evolution shown by the field of study and see the topics that are not receiving attention from researchers. The objective of this chapter is an analysis of the academic literature on e-government and the evolution of this field of knowledge. These findings allow us to have a clear idea of the evolution of e-government field, the disappeared research topics, and those that are currently in a lively debate. This analysis could be of interest to identify the trend in research of the e-government field of knowledge, as well as to examine the specialization of certain research topics.