Gynecological cancer is the fourth most common malignancy in women that affects female reproductive organs, including ovaries, fallopian tubes, uterus, cervix, vagina, and vulva. Breast cancer is also a malignant disease worldwide. Every year, over one million people were newly diagnosed with breast cancer. Apart from transfusion practice, blood group has established specific mode of inheritance and population-specific variation. The association between ABO blood group and several malignancies have been reported, including breast cancer, ovarian cancer, and cervical cancer. However, inconsistent results were obtained in various works on ABO blood group association with several malignancies and also inadequate research work on prognostic impact of ABO blood group among several cancers leads to uncertainty for cancer survival. In this background, the objective of present study is to understand the association between ABO blood group and the survival of different gynecological cancer patients of Bengali Hindu caste group. The present study consists of 148 clinically diagnosed female cancer patients (breast, uterus, and cervical). Data were collected on blood group, age at marriage, age at menarche, age at menopause, parity, and age at first pregnancy. Examination on survival and cancer revealed that the patients with A blood group have comparatively more survival time than other blood groups.