In Search of the Castaways is a novel by the French writer Jules Verne, published in 1867–68. The original edition, published by Hetzel, contains a number of illustrations by Édouard Riou. In 1876, it was republished by George Routledge & Sons as a three volume set titled A Voyage Round The World. The three volumes were subtitled South America, Australia, and New Zealand. As often with Verne, English translations have appeared under different names; another edition has the overall title Captain Grant's Children and has two volumes subtitled The Mysterious Document and Among the Cannibals.

Jules Gabriel Verne was a French novelist, poet, and playwright. His collaboration with the publisher Pierre-Jules Hetzel led to the creation of the Voyages extraordinaires, a series of bestselling adventure novels including Journey to the Center of the Earth (1864), Twenty Thousand Leagues Under the Seas (1870), and Around the World in Eighty Days (1872). His novels, always well documented, are generally set in the second half of the 19th century, taking into account the technological advances of the time.