Despite advances in chemotherapeutic regimens, ovarian cancer has a poor prognosis. Therefore important effective treatments are urgently needed. Many studies have reported that the immune system plays a critical role in disease progression and overall survival. One known effective immunotherapy is the dendritic cell (DC)-based vaccine pulsed with tumor-associated antigens. This chapter reports on a method of production of a novel DC-based vaccine. The key technologies are (a) monocyte collection without leukapheresis, (b) monocyte expansion, (c) production of dendritic cells, (d) multiple overlapping long peptides with heat shock protein 70, and (e) combination immunotherapy approach. The next generation of immunotherapy for ovarian cancer will be focused on combination approaches that simultaneously augment immunity while preventing local immune suppression. Possible combinations which might be useful to help patients with ovarian cancer are summarized in this chapter.