Breast cancer awareness is an effort to raise awareness and reduce the stigma of breast cancer through education on symptoms and treatment. Supporters hope that greater knowledge will lead to earlier detection of breast cancer, which is associated with higher long-term survival rates, and that money raised for breast cancer will produce a reliable, permanent cure.

Breast cancer advocacy and awareness efforts are a type of health advocacy. Breast cancer advocates raise funds and lobby for better care, more knowledge, and more patient empowerment. They may conduct educational campaigns or provide free or low-cost services. Breast cancer culture, sometimes called pink ribbon culture, is the cultural outgrowth of breast cancer advocacy, the social movement that supports it, and the larger women's health movement.

The pink ribbon is the most prominent symbol of breast cancer awareness, and in many countries the month of October is National Breast Cancer Awareness Month. Some national breast cancer organizations receive substantial financial support from corporate sponsorships.