So far, and citing historical and religious books from the early Islamic centuries, very valuable information has been published regarding Shiism. Based on these sources, it has been determined that during this period, Shiism had many followers in various cities and regions of Iran. However, when it comes to examining the archaeological findings of this period in Iran that are related to Shiism, not much comprehensive information has been published in this field. Given this, it was necessary to conduct an independent and purposeful study to examine such evidence in the current territory of Iran. The main question of the present study is whether archaeological evidence, such as inscriptions used in existing historical works, also confirms the influence and spread of Shiism in Iran during the early Islamic centuries. As a result, the present study was designed to examine historical works from the early Islamic centuries in Iran that are somehow related to Shiism. Since little archaeological evidence related to Shiism in Iran was identified from the first and second centuries AH, this article mainly examines works from the third to fifth centuries AH. The method of this research is descriptive-analytical and the method of collecting information is based on examining library resources and studying some historical artifacts in various museums inside and outside the country.