Clancy Sigal (born 1926) is an American writer, the author of an autobiographical novel Going Away (1961).
Clancy Sigal was born in Chicago, Illinois, where his father was a labor organizer.
Sigal arrived as an immigrant in Great Britain and lived with Doris Lessing, with whom he had a four-year affair. He was a part of the Philadelphia Association experiment with R. D. Laing at Kingsley Hall, drawing on his experiences there for his satirical novel Zone of the Interior. The novel could not find a British publisher in the 1970s willing to risk the libel laws.
Sigal was The Observer correspondent for the 1984 Los Angeles Olympic Games, and decided to settle in Los Angeles after falling in love there. His wife, Janice Tidwell Sigal, is featured in the recent BBC TV series The Trap. He was one of several co-writers of the screenplay for the 2002 Salma Hayek film Frida, based on the book Frida: A Biography of Frida Kahlo by Hayden Herrera. In 2013 he published Hemingway Lives! Why Reading Ernest Hemingway Matters Today. (OR Books)