Tolerance means respecting, accepting and understanding the richness of cultures, forms and ways of being human, which is cultivated through awareness, openness, communication and freedom of thought, conscience and opinions. One of the variables related to social tolerance is religiosity. Religiosity is a person's commitment to his accepted religion. This commitment is organized in a set of beliefs or feelings and individual and collective actions that revolve around God and the relationship of faith with Him. The purpose of this research was to analyze the sociological relationship between religiosity and social tolerance among the citizens of Tabriz city. The type of research was applied and the research method was survey. The statistical population was 497,898 households of Tabriz city and the sampling method was random stratified according to Tabriz municipal areas. According to Cochran's formula, the required sample size for the above statistical population was determined to be 384 people. The descriptive findings of the research showed that the mean of social tolerance was 107, the lowest score was 49, the highest score was 154 with a standard deviation of 10.57. Also, the average religiosity was 81.5, the lowest score was 24 and the highest score was 114, and the standard deviation was 18.8. According to the hypothesis test, there was a significant relationship between the level of religiosity and social tolerance of Tabriz citizens. The amount of social tolerance was the same according to gender, education levels, marital status and age of the citizens of Tabriz city