Carcinoid tumors of appendix are rare tumors and preoperative diagnosis may be challenging. The prevalance of appendiceal carcinoid is 0.3 to 0.9 % in patients undergoing appendectomy. Carcinoid of the appendix does not change the management of primary gynecologic disease in most cases. But if the surgical margins are not intact, size of the carcinoid is more than 2 cm, malignant histological appearance of the carcinoid or involvement of mesoappendix or lymph nodes requires further evaluation and treatment such as right hemicolectomy and/or chemotheraphy. We report two cases of endometrial carcinoma and one case of epithelial ovarian carcinoma undergoing staging surgery and found primary appendiceal tumor in the appendectomy specimens.