Mr. Fairlie's Final Journey is a detective fiction novel by American writer August Derleth. It was released in 1968 by Mycroft & Moran in an edition of 3,493 copies. The novel is part of Derleth's Solar Pons stories which are pastiches of the Sherlock Holmes tales of Arthur Conan Doyle. It was the eighth Solar Pons book published by Mycroft & Moran.