As well as organizing the Canadian Literary Competition, Robert Weaver was fiction editor of Saturday Night. He edited many anthologies, including six editions of Canadian Short Stories and The Anthology Anthology: A Selection from Thirty Years of CBC Radio's "Anthology". He co-edited two editions each of The Oxford Anthology of Canadian Literature and The Oxford Book of Canadian Short Stories in English, and he was the editor of Mavis Gallant's collection The End of the World and Other Stories.