Eli Sagan (March 3, 1927 – January 4, 2015) was an American businessman who headed one of the nation's largest manufacturers of outerwear for young women, an autodidact in cultural sociology who wrote several widely reviewed books on the subject and a political activist who served on the national finance committee for George McGovern's 1972 presidential campaign, a role that earned him a spot on Richard Nixon's Enemies List in 1973.