Endometrioid carcinoma of ovary is a subtype of epithelial tumours of the ovary. It can be distinguished from serous and mucinous tumours by presence of tubular glands resembling that of malignant endometrium. We report a case of endometrioid carcinoma of ovary which occurred in a 60years old women. The patient presented with abdominal distention and she underwent a hysterectomy with left side salphingo- ooherectomy. Histologically, ovarian tumour was composed of tubular glands with squamous metaplasia and Sertoli cell tumour like pattern in some foci and was diagnosed as Endometrioid carcinoma- ovary.