List of joint winners of the Hugo and Nebula awards

This is a list of the works that have won both the Hugo Award and the Nebula Award, given annually to works of science fiction literature. The Hugo Awards are voted on by science-fiction fans at the World Science Fiction Convention (Worldcon); the Nebula Awards—given by the Science Fiction and Fantasy Writers of America (SFWA)—began in 1966, making that the first year joint winners were possible.

The categories are defined by number of words, as follows:

In 1960, Daniel Keyes won a Hugo for his short story Flowers for Algernon; he then expanded it into a novel, which was awarded the Nebula for Best Novel in 1966.

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