The Ganymede Club is a science fiction novel by American writer Charles Sheffield, published in 1995. A mystery and a thriller, the story unravels in the same universe that Sheffield imagined in Cold as Ice. Shortly after humanity begins colonisation of the Solar System, a trade war sets off vicious civil war that kills billions. The book received favorable reviews from Library Journal and Kirkus Reviews, as well as in the science-fiction press. It was ranked #14 in SF novels in the 1996 Locus awards. The novel has been translated into Italian and was published as Memoria impossibile in 1998 in the magazine Urania. In 2009 Bastei Lübbe published a German language edition in Germany.