The Brentford Trilogy is a series of twelve novels by writer Robert Rankin. They humorously chronicle the lives of a couple of drunken middle-aged layabouts, Jim Pooley and John Omally, who confront the forces of darkness in the environs of West London, usually with the assistance of large quantities of beer from their favourite public house, The Flying Swan.

Robert Fleming Rankin is a prolific British author of comedic fantasy novels. Born in Parsons Green, London, he started writing in the late 1970s, and first entered the bestsellers lists with Snuff Fiction in 1999, by which time his previous eighteen books had sold around one million copies. His books are a mix of science fiction, fantasy, the occult, urban legends, running gags, metafiction, steampunk and outrageous characters. According to the biography printed in some Corgi editions of his books, Rankin refers to his style as 'Far Fetched Fiction' in the hope that bookshops will let him have a section to himself. Many of Rankin's books are bestsellers.