Carcinoid tumors of the ovary may be primary or metastatic. Primary carcinoid tumors are rare and the majority of tumors occur in association with a mature cystic teratoma, but a considerable number occur in a pure form. They may also arise in a solid teratoma or mucinous tumor. Histologically, according to WHO, there are four variants: insular, trabecular, strumal and mucinous. They can be mixed with a combination of pure types; most often insular and trabecular. Immunohistochemistry is necessary for confirmation of the diagnosis. Most tumors are seen in perimenopausal women. Two thirds of primary carcinoid tumors are localized and have a good prognosis. Surgery is the treatment of choice based on total hysterectomy with bilateral adnexectomy. The present case report describes a carcinoid tumor associated with endocervical-like mucinous borderline tumor with microinvasion of the ovary in a 49 year old woman.