Brenner tumor is a raresurface epithelial group of ovarian neoplasm . It most commonly have benign presentation. They are divided into benign, borderline and malignant neoplasms. The majority of them are asymptomatic in nature and are found incidentally. On imaging ,these have nonspecific findings.Microscopically demonstrate nest of benign transitional epithelium against background of numerous spindle shaped cells that are arranged in the form of diffuse sheets and fascicles.there is no consistement tumor marker and express immunohistochemical marker like CK7, uroplakin III and p63 Here, we present a rare case of Brenner tumor of ovary.