New Dimensions 3 is an anthology of original science fiction short stories edited by Robert Silverberg, the third in a series of twelve. It was first published in hardcover by Nelson Doubleday/SFBC in October 1973, with a paperback edition under the variant title New Dimensions III following from Signet/New American Library in February 1974. The book collects eleven novelettes and short stories by various science fiction authors, together with an introduction by the editor.