The adenomatoid tumor is a rare and interesting neoplasm which is usually a small, circumscrited benign lesion of the female and male genital tract characterized by somewhat adenomatcus structure and is of uncertain derivation. The ovary apparently is the least frequent site of the adenomatoid tumor, therefore only 8 cases were reported in the literature. We experienced recently a case of adenonlatoid tumor of the ovary in a G6P4L4A2P0 38 years old housewife. Grossly the tumor was firm. solid and well circumscribed. The diameter of the tumor is 1cm and the cut surface showed grayish white homogenous appearance. Microscopically the tumor consisted of irregular glands or vessel like spaces which were lined by cells, designated by various authors as endothelial, mesothelial, or epithelial within a fibrous background. A brief review of literature pertinent to the case is also made.