Frank Chadwick is an American game designer and New York Times best selling author. He has designed hundreds of games, his most notable being the role-playing games En Garde!, Space: 1889 and Twilight 2000, and the wargame series Europa and The Third World War, as well as creating Traveller with Marc Miller. He has won multiple awards for his work.

Space: 1889 is a tabletop role-playing game of Victorian-era space-faring, created by Frank Chadwick and originally published by Game Designers' Workshop (GDW) from 1989 to 1990. It was the first roleplaying game to feature space colonization using steam technology in the style of Jules Verne, H.G. Wells, and Arthur Conan Doyle in what would later be called steampunk. The setting of Space: 1889 has not only produced roleplaying games, but boardgames, books, miniatures and a computer game.