Gord the Rogue is the protagonist in a series of fantasy novels and short stories written by Gary Gygax. Gygax originally wrote the novels and short stories to promote his World of Greyhawk campaign setting for the Dungeons & Dragons role-playing game. After he left TSR, Gygax continued to write Gord the Rogue novels for several years. In all of these works, the plot revolves around the adventures of a young man named Gord who rises from humble origins in the slums of a large city on the planet Oerth to become a powerful force trying to stave off the takeover of Oerth by demons.

One of the factors that contributed to the success of the Dragonlance setting when it was published in 1984 was a popular series of concurrent novels by Tracy Hickman and Margaret Weis. Gary Gygax, the developer of the World of Greyhawk campaign setting, realized that novels set in Greyhawk could have a similar benefit for his recently published World of Greyhawk boxed set, so he wrote Saga of Old City, the first in a series of novels that would be published under the banner Greyhawk Adventures. The protagonist was Gord the Rogue, and this first novel told of his rise from the Slum Quarter of the city of Greyhawk to become world traveller and thief extraordinaire. The novel was designed to promote sales of the boxed set by providing colourful details about the social customs and peoples of various cities and countries in a region called the Flanaess.

Shannon Appelcline noted that "Gygax introduced Gord in Dragon #100 (August 1985) in a story called “At Moonset Blackcat Comes.” The first novel, Saga of Old City (1985) appeared a couple of months later." Appelcline also noted that as TSR published the last projects that Gygax started, "A few more Greyhawk books appeared as well. The first of those was Artifact of Evil (1986), Gygax's second and final Gord the Rogue novel for TSR." Appelcline commented that "After Gygax left TSR in 1985, the Greyhawk setting forked. Gygax himself retained rights to his fictional character, Gord the Rogue — as well as a few characters whose names derived from his, such as Zagyg the Mad Wizard. Over the next several years, Gygax used those rights to publish a series of Gord the Rogue novels ending with Dance of Demons (1988) in which Gygax destroyed Oerth (!) and replaced it with the world of Yarth — which may or may not have been the Aerth of Mythus (1992)."

Appelcline explained that since Gygax retained his rights to Gord when he started New Infinites, "Now, he licensed Greyhawk from TSR and started writing new books. The first was Sea of Death (1987), and it quickly hit bestseller lists. Over the next years, the success of the Gord novels would continue, and they would be the main thing keeping New Infinities in business. As a result, Gygax would spend most of his time at New Infinities working on books rather than RPGs." Appelcline noted that "Gygax's Gord the Rogue appeared a few times after New Infinities disappeared, once in White Wolf 's Pawn of Chaos: Tales of the Eternal Champion (1996) and once in Paizo Publishing's Dragon Magazine #344 (2006). Some of his stories were also reprinted by Troll Lord Games and Paizo Publishing." Appelcline also noted that in 2006 "Troll Lord Games revealed that they had licensed Gygax's Gord the Rogue novels, previously published by TSR and New Infinities Productions. The first, Tale of Old City (2008), would unfortunately be one of Troll Lord's final Gygax publications."

Even before Saga of Old City rolled off the presses in November 1985, Gygax wrote a sequel, Artifact of Evil. He also wrote a short story, "At Moonset Blackcat Comes", that appeared in the special 100th issue of Dragon magazine in August 1985. This introduced Gord the Rogue to gamers just before Saga of Old City was scheduled to be released.

However, at the same time, various factions within TSR with different visions of the company's future caused a power struggle, and Gygax was forced out on December 31, 1985. By the terms of his settlement with TSR, Gygax kept the rights to Gord the Rogue as well as all D&D characters whose names were anagrams or plays on his own name (for example, Yrag and Zagyg).

After Gygax left TSR in 1985, he continued to write a few more Gord the Rogue novels, which were published by New Infinities Productions: Sea of Death (1987), Night Arrant (1987), City of Hawks (1987), Come Endless Darkness (1988), and Dance of Demons (1988). In Gygax's absence, however, TSR moved the Greyhawk storyline in new directions that Gygax didn't appreciate, and the line of Greyhawk Adventures novels (without Gord the Rogue) continued to be written by Rose Estes. In a literary declaration that his old world of Oerth was dead, and wanting to make a clean break with all things Greyhawk and D&D, Gygax destroyed his version of Oerth in the final Gord the Rogue novel, Dance of Demons.

The series of novels follows the progress of the orphan beggar Gord, from his lowly youth to his ascension as an avatar of Balance. Gord begins his career with less than heroic motives, but early mentors Gellor the bard and druid Curley Greenleaf continually steer him toward honorable ends. Eventually Gord is revealed to have a kinship with an enigmatic deity named the Catlord.