John Andrew Keith (August 31, 1958 – August 7, 1999)^[2] was an American author and games developer.

J. Andrew Keith, and his brother William H. Keith Jr., responded to ads in Journal of the Travellers Aid Society for authors to write for Game Designers' Workshop (GDW); Loren Wiseman started them with freelancing for GDW in the late 1970s and the three of them set up much of the early material for Traveller.^[3]: 56 J. Andrew Keith's wrote so much for the Journal of the Travellers Aid Society that he began to use the pseudonyms John Marshal and Keith Douglass.^[3]: 56 The Keith brothers were making enough money that they were able to freelance full-time by 1979.^[3]: 56 The Keith brothers then began working for FASA by the end of 1980.^[3]: 119 FASA began publishing adventures for Traveller beginning with Ordeal by Eshaar (1981) by the Keith brothers, who then wrote the "Sky Raiders" trilogy (1981-1982) for FASA.^[3]: 119 J. Andrew Keith briefly edited the magazine High Passage in 1982 before the High Passage Group told FASA that they could no longer publish material for High Passage; FASA replaced this magazine with a new magazine by J. Andrew Keith called Far Traveller beginning in October 1982.^[3]: 119 FASA ended its support of Traveller in 1983, so the Keith brothers continued writing Traveller material with the new company Gamelords, but continued working for FASA on other games.^[3]: 120 The Keith brothers wrote seven supplements for Gamelords, including The Mountain Environment (1983), The Undersea Environment (1983),^[4]: 342 and The Desert Environment (1984).^[3]: 131

J. Andrew Keith wrote some adventures for Fantasy Games Unlimited's Chivalry & Sorcery before the line ended in 1984.^[3]: 74 The Keith brothers then worked on some of FGU's other lines in 1985 including Aftermath!, Daredevils, Flashing Blades, and Psi World.^[3]: 75 The Keith brothers also designed Freedom Fighters (1986), one of the last role-playing games published by FGU.^[3]: 75

Andrew was a rather prolific Science Fiction and Role-Playing Game author, and the bibliography presented below is in no way comprehensive. Several of these works were with various co-authors, most commonly his brother, William H. Keith Jr.^[5]

• A note regarding pen names in the words of William H. Keith Jr.:

"We shared several [pen names]: Keith William Andrews, Keith Douglass, and H. Jay Riker. Back in the Traveller days, when he was doing a ton of writing for the old Journal of the Traveller's Aid Society, he used several pen names, including Keith Douglass and John Marshall, so it wouldn't look like the journal was entirely an Andrew Keith production."