Dying of the Light is a science fiction novel by American writer George R. R. Martin, published in 1977 by Simon & Schuster.

[4] Martin's first novel, Dying of the Light is set in the same fictional "Thousand Worlds" universe as several of his other works, including Sandkings, Nightflyers, A Song for Lya, "The Way of Cross and Dragon" and the stories collected in Tuf Voyaging.

It is a rogue planet whose erratic course is taking it irreversibly away from its neighboring stars into a region of cold and dark space where no life will survive.

Worlorn's 14 cities, built during a brief window when the world passed close enough to a red giant star to permit life to thrive, are dying, too.

Dying of the Light was first serialized in abridged form under the title After the Festival in the April through July 1977 issues of Analog Science Fiction and Fact.