This thesis presents a comprehensive Freudian study of the concepts of guilt and desire in Ian McEwan's novel, "Atonement." Grounded in a qualitative research method, the study explores the psychological dimensions of guilt and desire within the narrative, shedding light on the motivations, conflicts, and transformations of the characters. Drawing on Freudian theories, including the Oedipus complex, repression, and the unconscious mind, the analysis delves into the intricate interplay between guilt and desire as portrayed in the novel. The research methodology involves a close reading of the text, identification of relevant passages, and thematic analysis of the data. The findings highlight the pervasive presence of guilt throughout the narrative and the transformative power of guilt as a driving force behind the characters' actions and relationships. Additionally, the study examines the multifaceted nature of desire, from the unconscious and repressed desires to the explicit expressions of desire between characters. The integration of Freudian theory enriches our understanding of the characters' internal struggles, self-perception, and the impact of their guilt and desires on their psychological well-being. Through its analysis, this thesis provides valuable insights into the psychological dynamics of guilt and desire in " Atonement," contributing to literary analysis and enhancing our understanding of the human psyche as portrayed in literature. The study underscores the enduring relevance of Freudian concepts in exploring complex human emotions and motivations, inviting further research in the field.