Breast cancer is most common type of cancer found in women of developed countries. Early diagnosis of breast cancer is one of the best approaches to prevent this disease. A study was conducted to assess the knowledge on breast cancer risk factors among 50 women by using convenient sampling technique in selected hospital, Coimbatore. The women knowledge of breast cancer was assessed by structured questionnaire method. The finding of the study revealed that 34% of women had poor knowledge, 36% of women had fair knowledge and 30% of women had good knowledge on breast cancer risk factors.