Loneliness and isolation are modern-day sensibilities whose consequences are very different from the achievements of isolation, seclusion, and seclusion in the classical era. For this reason, this concept is being rethought and redefined in the modern era. Hortolanus and his colleagues are among the theorists who have defined this concept in the modern world with its components and evaluated it in the field. The definition of loneliness in this framework is a mental and cognitive state that is linked to other concepts such as intimacy, a sense of belonging, and emptiness. The present study aims to examine and analyze the three novels ", An Madaran, In Dokhtaran " (2018), "Atash" (2018), and "Rehesh" (2017) based on this approach with an analytical-descriptive method. Accordingly, first, narrative data based on the central components of the concepts of loneliness and isolation were separated, and then the manifestation of loneliness, types, and contexts of the emergence of lonely and isolated characters in the narrative were analyzed. The main characters of these novels are each a type of loner, the most important manifestation of which is emotional loneliness, especially in the family. Also, the impact of the structure of society and culture on this loneliness is a special emphasis in these novels, and thus social loneliness and environmental isolation are a prominent feature in the narratives and characterization. The difference between the religious beliefs of the characters and the practical and realized manifestation of religion in society and the lifestyle narrated in the novel has also caused loneliness and isolation to be more prominent for the characters and they are more aware and sensitive to it.