Short fiction by British women writers from the postwar era of the 20th century demonstrates an enduring focus on the essence of female identity. This paper examines short stories by Doris Lessing, a prominent figure in British literature, who has yet to receive proper attention in Ukrainian literary criticism. To address the issue of British female identity in the postwar period, the researcher employed new criticism methods, specifically close reading and feminist criticism, namely gynocritics (E. Showalter), as well as comparative analysis. The examination of selected short stories by D. Lessing revealed certain patterns in the author’s style. Her formal skill is marked by the principle of duplication, which includes: a) repetition of problems, such as marital crises and polygamy (e.g., “A Man and Two Women”, “Each Other”, “To Room Nineteen”); b) duplication of character names (“Each Other”); c) recurrence of plot situations, such as adultery (“A Man and Two Women”, “To Room Nineteen”), and characters’ unhealthy states, including personality disorders (“Dialogue”) and madness (“To Room Nineteen”); d) use of dual narrative perspectives (“To Room Nineteen”, “Dialogue”). The issues related to female identity in D. Lessing’s collection of short stories are presented within two broader contexts: marriage and extramarital relations. Accordingly, two main forms of female individuality emerge: a) the betrayed wife (“A Man and Two Women”, “To Room Nineteen”) and b) the mistress (“Between Men”, “Our Friend Judith”) and her modification, the free woman (“Dialogue”). Despite being mature, intelligent, and experienced, all these characters remain lonely and unhappy.