Events, due to the benefits they bring to cities, have become a matter of concern to managers and urban planners around the world today. Rather, it can be said that governments were and still consider holding major events as one of their important tools in improving their image internally and externally. The role of local governments and urban managements today in holding any mega event in their cities is by calculating the benefits and harms, submission and competition, and planning to compete with other cities taking into account their competitive advantages. The presence of mega events in three holy cities in Iraq can be an opportunity for urban managements to develop their cities, just as other cities in the world have taken them as a tool for their development. This is done by urging stakeholders to interact with the city, bring public participation, finance, urban marketing, and others. Where this research studied global models for the roles of local governments in holding mega events and making the most of this global opportunity and analyzed the roles played by the governments of our holy cities and what they can and should be.