Light is one of the many wonders in the architecture Iranian houses. It is a major tool for space creation anddesign. An important consideration in the Iranian architecture, which takes a functional and conceptual approach to the extensivesubject of light, has been that light should create a beautiful and spiritual space in addition to being functional. The light used in ahouse should be pleasing to the eye, and it should not be dazzling or bothersome. Optimal use of light plays a major role in creatingmental peace and physical comfort and saving energy. This paper investigates different methods of exploiting natural light in thearchitecture of Iranian houses. For this purpose, three houses of historical interest in the city of Kashan in Iran (Boroujerdi-ha,Tabatabaei-ha, and Abbasian) were studied for the position and role of natural light in them. A qualitative research method wasused within an analytical-interpretative approach. First, the elements and components used to exploit natural light were studied,and then the strategies employed to manifest values, meanings, and concepts were explored within an analytical model. تفاصيل المقالة