Gentleman Junkie and Other Stories of the Hung-Up Generation is an early collection of short stories by Harlan Ellison, originally published in paperback in 1961. Most of the stories were written while Ellison was a draftee in the United States army between 1957 and 1959. These were sold to Rogue Magazine, a pulp fiction magazine of the era. Other stories in the collection had appeared previously in publications ranging from Alfred Hitchcock's Mystery Magazine to a Chicago weekly newspaper.