This paper is a study on the concept of religiosity and national identity among the 598 young people in Baneh and Qurveh (Western cities in Iran) by a questionnaire. This survey method shows that the rate of religiosity based on Klark and Stark scale and a nation identity have significant relationship with different aspect. The independent variables of the research totally explain 41 percent of the variations. The results also show that there is a negative relationship between religiosity and national identity. If the rate of religiosity increase among the youth, the rate of national identity include negative trend.