Iran's historical Bazaars are a comprehensive example of Iranian indigenous culture and the social capital of these Bazaars can be explored in cultural and religious, social, economic, historical, semantic, and spatial dimensions. Historical Bazaars have high environmental patterns and qualities with valuable spaces, traditions, events and structures that have been rich and dynamic social capital over time. This is undermined by the construction of contemporary passages and shopping malls with non-indigenous styles. This paper aims to explain the dimensions and qualities of social capital in historical Bazaars and a case study of Tabriz's historical Bazaar, using analytical-documentary research method and field survey. Historic Bazaars, with valuable patterns in the structure and components of indigenous traditions in spaces such as the Order, Timche, Serra, corridors, and mosques, carry a huge collection of consensus capital over time. Field survey research shows that items such as social interaction, participation in ceremonies and helping the needy, belonging and safety, attending mosques, and observing the rights of others have a mean score of 3. 76 and 3. 85 respectively. Social Capital in the Historical Bazaar of Tabriz Based on the Economic Basis, the Spatial and Physical System of Iranian-Islamic Culture Cultural and religious based on celebrations, mourning, religious beliefs, helping the needy, strong neighborly relations).