The Motor Rally Mystery is a 1933 detective novel by John Rhode, the pen name of the British writer Cecil Street.

[1] It is the fourteenth in his long-running series of novels featuring Lancelot Priestley, a Golden Age armchair detective.

[2] It takes place against the backdrop of the real life RAC Motor Rally, which concluded at Torquay.

Reviewing the novel in The Spectator Dilys Powell concluded "Dr. Priestley, as usual takes nothing on trust; and Mr. Rhode achieves a pretty piece of deduction."

Inspector Hanslet leads the case but the real work is done by the criminologist Priestley, who retraces the entire journey of care in order to solve the mystery.