Barbara Brenner (October 7, 1951 - May 10, 2013) was a renowned American breast cancer activist, after activist and legal work on several other causes, including anti-Vietnam War activism, women's rights, civil rights, and employment discrimination. She led the organization Breast Cancer Action, which critiqued orthodoxy regarding the cancer, of which she was also a survivor. She was partners for 38 years with Suzanne Lampert, her partner since graduate school at Princeton University. She died at the age of 61 on May 10, 2013.