Abbott Howard "Abbie" Hoffman was a social and political activist in the United States who co-founded the Youth International Party ("Yippies"). Later he became a fugitive from the law, who lived under an alias following a conviction for dealing cocaine.

Hoffman was arrested and tried for conspiracy and inciting to riot as a result of his role in protests that led to violent confrontations with police during the 1968 Democratic National Convention, along with Jerry Rubin, David Dellinger, Tom Hayden, Rennie Davis, John Froines, Lee Weiner and Bobby Seale. The group was known collectively as the "Chicago Eight"; when Seale's prosecution was separated from the others, they became known as the Chicago Seven.

Hoffman came to prominence in the 1960s, and continued practicing his activism in the 1970s, and has remained a symbol of the youth rebellion and radical activism of that era. In his 1980 autobiography, Soon to Be a Major Motion Picture, he described himself as an anarchist.