Ovarian cancer is one of the gynecologic cancers with a high mortality rate and increased incidence. Surgery and therapies are used to treat ovarian cancer patients. Therapies such as chemotherapy and radiotherapy can cause resistance therefore immunotherapy using natural killer (NK) cells can be an alternative therapy. NK cells have shown an important role in anticancer activity because it is able to kill target cells without prior sensitization and can acquire immunology memory. However, NK cells as immunotherapy have low capacity and efficacy on infiltrating ovarian cancer's tumor microenvironment. To overcome these NK cells need to be induced with certain antigen resulting in enhanced NK cells. Enhanced NK cells display a higher cytotoxic activity that can be seen by co-culturing enhanced NK cells with ovarian cancer cell lines. In this mini-review, the selection of ovarian cancer cell lines was displayed to offer reliable consideration to obtain the expected research endpoint.