A case report describes a postmenopausal woman who presented with vaginal bleeding and a pelvic mass. She was found to have a colon cancer with a large metastasis in the right ovary. A review of the literature suggests that ovarian metastasis from a primary colon carcinoma is not rare. Frequently, the ovarian tumors causes symptoms sooner than the primary carcinoma. The presence of ovarian metastasis is associated with a poor prognosis. Consideration should be given to the performance of prophylactic oophorectomy during colon resections for carcinoma.