In recent years, the implementation of integrated information systems in the Iranian public sector has significantly increased. This is of more importance in holdings and multi-branch organizations. Considering the fact that the cost, time-span and quality of implementation of these systems, has a dramatic impact on public sector effectiveness, therefore, identification and classification of factors and indicators of efficient utilization of systems will be of significance. In this research, five factors namely, public sector employee’s impact, infrastructure, technical, and system impact, functional and process-oriented impact, managerial and governance impact, legislative and structural impact, and finally, the overall impact of mentioned five factors on efficient utilization of integrated information systems were assessed using a questionnaire. Then, using the classification algorithms, categories of indicators were differentiated. Afterwards, results were validated. Finally, the results illustrated that the commitment and enthusiasm of public sector employees as well as technical infrastructure and processes are the most influential factors on the efficient utilization of integrated information systems.