Jahangirnameh, written by Qasem-e Madeḥ is one of the epic poems that describes Rostam’s life after the death of Sohrab and then explains his acquaintance with Delnavaz, the daughter of Messiah, the praytal (Massihaye Aed) and the birth of Jahangir and the narration of his courageous actions. In the first section of the story, Rostam who feels lost, confused and sad after killing Sohrab, leaves his home land and goes to Mazandaran to start an inner journey through entering the unconscious world which transforms his personality. Rostam‘s journey to Mazandaran, the events he goes through and what he experiences can be reviewed as an archetype. This research Using the notion of the process of individuality based on Jungian analytical psychology studies the archetypes in Jahangirnameh, including mask, Anima, shadow, the sage, etc. and analyzes the process of individuation of Rostam. In this story, Rostam, after killing Sohrab, becomes ready to regain his lost individuality by leaving the conscious world (Iran) and entering an unknown unconscious world (Mazandaran) and confronting the elements and aspects of unconsciousness. Rostam’s individuality which has been distorted after the death of Sohrab, is reconstructed after facing Jahangir who is a substitute for Sohrab.