Best SF: 1968 (also known as The Year's Best Science Fiction No. 2) is the second on a series of annual anthologies of science fiction stories edited by Harry Harrison and Brian W. Aldiss, first published in a British edition in January 1969 by Sphere Books. The first American (and first hardcover) edition was released later that year by Putnam, with a Berkley paperback following shortly thereafter. Severn House issued a British hardcover edition in 1977.