Carcinoid tumors are peripheral endocrine system, which produce biologic amines and various polypeptides. Primary carcinoid tumors of the ovary are devided into insular, trabecular, strumal types. The primary insular carcinoid should be distinguished from carcinoid metastatic to the ovary, which is nearly always bilateral, is usually associated with the presence of peritoneal metastases. The age incidence of patients with ovarian carcinoids show a wide range but most patients are postmenopausal. Most primary insular carcinoids of the ovary have been components of teratomas, but some have occurred in apparently pure form. We experienced a case of primary insular carcinoid tumor of the ovary and report it with a brief review of concerned literature.