"The Fun They Had" is a science fiction story written by Isaac Asimov. It first appeared in a children's newspaper in 1951 and was reprinted in the February 1954 issue of The Magazine of Fantasy and Science Fiction, as well as the collections Earth Is Room Enough (1957), 50 Short Science Fiction Tales (1960), and The Best of Isaac Asimov (1973). It has been modified in a Finnish English book called KEY English 8-9.
Written as a personal favour for a friend, "The Fun They Had" became more popular than he expected. It is the most anthologised of all Asimov's stories and has appeared in many publications outside of the science fiction genre.