Korean Red Ginseng (KRG) is an ethnopharmacological plant that is traditionally used to improve the body’s immune functions and ameliorate the symptoms of various diseases. However, the anti-tumorigenic effects of KRG and its underlying molecular and cellular mechanisms are not fully understood in terms of its individual components. In this study, in vitro and in vivo anti-tumorigenic activities of KRG were explored in water extract (WE), saponin fraction (SF), and non-saponin fraction (NSF).