A Lost Leader is a 1906 politically-themed novel by British writer E. Phillips Oppenheim.[1][2] Later better known for his thrillers, it was one of several novels Oppenheim wrote at the time centred on "social political life".[3] In it, a potential Liberal Party politician, Lawrence Mannering, is lured back from his country estate to London to revive the party's fortunes.
In 1922 it was adapted into a British silent film of the same title directed by George Ridgwell and starring Robert English, Dorothy Fane and George Bellamy.[4]