Camp X is a children's spy novel written by Canadian author Eric Walters. Set in World War II, the novel is about the two brothers Jack and George, trying to save a top-secret Canadian military base called Camp X. They accidentally discovered it after playing a fake game of war. Camp X was first published in 2002 and was followed by several sequels such as Camp 30, Fool's Gold, Shell Shocked and Trouble in Paradise. The book is dedicated to the memory of William Stephenson, who established the spy camp. He appears in the novel as Little Bill.