Sidney E. Zion (November 14, 1933, Passaic, NJ – August 2, 2009, Brooklyn) was an American writer. His works include Markers, Begin from Beginning, Read All about It, Trust Your Mother but Cut the Cards, (collections of his columns), Loyalty and Betrayal: The Story of the American Mob and Markers (a novel). He co-authored The Autobiography of Roy Cohn. He also was a co-founder and co-editor of Scanlan's Monthly magazine.