National identity is a set of positive tendencies and attitudes towards the identifying and unifying factors, elements and patterns at the level of each country as a political unit that challenges the culture of nations more than any other in the field of globalization. On the one hand, global networks broadcast mass culture, and on the other hand, they feed the elites of society with the aim of innovation and invention, and by eliminating the temporal and spatial dimension, they provide good identity needs, but cultural globalization has consequences such as consumption. Orientalism also promotes Western culture and style. This research aimed to identify impacts of cultural globalization on the national identity of the students of the Islamic Azad University, Tehran Branch, and the research framework is based on the theory of Giddens and Stuart Hall. The research method is descriptive and applied in terms of purpose and in terms of data collection, it is a survey and field method. The data collection tool is a researcher-made questionnaire. This study investigates the relationship between cultural globalization and the extent to which Iranian youth belong to their national identity. The research data were collected using a researcher-made questionnaire with 384 young people aged 18 to 30 years old living in districts 2 and 16 of Tehran who were selected using multi-stage cluster sampling method in 2018. Research results show that with increasing dependence on online social networks and extreme use of them, consumerism and the tendency to global identity, the degree of belonging and dependence on national identity decreases and the tendency of young people to culture and global identity and values increases. But global awareness of social, and cultural processes, issues, and events in the world increases national and cultural affiliation. Global patterns threaten national identities by creating a common language, lifestyle and culture. Therefore, cultural managers and policy makers by using and benefiting from new technologies and virtual social networks can enrich and preserve national identity and globalization of Iranian identity, Iranian Islamic lifestyle and Iranian history and customs to revive and Recognize it to young people and other nations.