The 1977 Annual World's Best SF is an anthology of science fiction short stories edited by Donald A. Wollheim and Arthur W. Saha, the sixth volume in a series of nineteen.

The paperback edition was reissued by DAW in 1983 under the variant title Wollheim's World's Best SF: Series Six, this time with cover art by Bernal.

A British hardcover edition was published by Dennis Dobson in November 1979 under the variant title The World's Best SF 4.

The book collects ten novellas, novelettes and short stories by various science fiction authors, with an introduction by Wollheim.

The stories were previously published in 1976 in the magazines Galaxy, The Magazine of Fantasy & Science Fiction, and Amazing Science Fiction, the anthologies Andromeda 1, Stellar No 2, New Worlds 10, and Aurora: Beyond Equality, and the collection The Custodians and Other Stories.