Introduction: Cancer has been most feared among all the significantly increasing chronic diseases, and is widely assumed to be fatal. The quality of life (QOL) of the patient pertaining to physical, psychological, social, and spiritual well-being is altered, which ultimately affects the QOL of the family caregivers. The study was conducted to assess the QOL among family caregivers of cancer patients and how cancer changes and alters the vision about life for the patient as well as the family caregivers. Objective: The objective was to assess the QOL among family caregivers of the cancer patients. Methodology: A cross-sectional, questionnaire-based study was conducted after the protocol was approved by the institutional ethics committee and obtaining written informed consent from the participants. Two sets of validated questionnaire were used to assess the awareness and QOL of the family caregivers of the cancer patients. The filled questionnaires were received from the participants, and data were analyzed using descriptive statistics. Results: Nearly 74% (148/200) of the participants responded, with majority of the caregivers being females (71.62%). Majority (72.9%) expressed that cancer cannot spread from one person to another and were positive (70.9%) toward cancer cure. The caregivers (76.3%) opined that the diagnosis of cancer should be informed to the family members. Approximately 50% of the participants were aware that environmental toxins and tobacco would predispose to cancer. Although most of them (87.8%) believed that the cancer treatment cause ill effects, they (93.2%) were satisfied with the hospital facilities. Among the QOL parameters, most of the participants had complaint of decreased general physical health, difficulty to cope, reduced concentration, anguish over the first treatment, disease, and interference in household activities. Among the spiritual parameters, the participants expressed sufficient support from religious activities, prayer, and general spiritual well-being. Conclusion: Majority of the caregivers had awareness regarding the cancer and carcinogens from the environmental toxins. The QOL among caregivers of cancer patients is affected in all dimensions of life, with more emphasis on the social and psychological dimensions.