The construction of social identity is an interdisciplinary term, which is a favourite topic for many scholars worldwide. Religion and identity are intertwined regarding the concept of identity construction. In Iran, this relation can best be seen through English as a Foreign Language (EFL) textbooks. To achieve this, this study investigates the depiction of men and women within Iranian high school EFL textbooks, tested against Islamic custom, utilizing linear and nonlinear approaches. Or, to put it another way, the content and pictures of these textbooks were tested with regards to Islamic customs. Finally, the concept of nationhood and identity were elaborated upon, regarding religious content in the EFL high school textbooks of Iran.