Jill Ellen Stein (born May 14, 1950) is an American physician, activist, and former political candidate. She was the Green Party's nominee for President of the United States in the 2012 and 2016 elections and the Green-Rainbow Party's candidate for governor of Massachusetts in 2002 and 2010.
During her campaigns for President, she campaigned on the theme of a Green New Deal which included a number of reforms to address climate change and income inequality, as well as civil and political rights reform. In 2012, Stein received 0.36 percent of the popular vote; in 2016, she received 1.07 percent of the popular vote.
In 2023, it was announced that Stein would help run Cornel West's Green Party campaign for president, challenging President Joe Biden.
Stein was born in Chicago, Illinois, the daughter of Gladys (née Wool) and Joseph Stein. She was raised in Highland Park, Illinois. Her parents were descended from Russian Jews, and Stein was raised in a Reform Jewish household, attending Chicago's North Shore Congregation Israel.
In 1973, Stein graduated magna cum laude from Harvard College, where she studied psychology, sociology, and anthropology. She then attended Harvard Medical School and graduated in 1979. After graduating from Harvard Medical School, Stein practiced internal medicine for 25 years at Beth Israel Deaconess Medical Center, Simmons College Health Center, and Harvard Pilgrim Health Care, which are all located in the Boston area. She also served as an instructor of medicine at Harvard Medical School.
As a physician, Stein became increasingly concerned about the connection between people's health and the quality of their local environment, and decided to turn to activism in 1998, when she began protesting the "Filthy Five" coal plants in Massachusetts. Since 1998, she has served on the board of the Greater Boston chapter of Physicians for Social Responsibility. She received Clean Water Action's "Not in Anyone's Backyard Award" in 1998 and its "Children's Health Hero Award" in 2000, Toxic Action Center's "Citizen Award" in 1999, and Salem State College's "Friend of the Earth Award" in 2004.