The Nine Tailors is a 1934 mystery novel by the British writer Dorothy L. Sayers, her ninth featuring Lord Peter Wimsey. The story is set in the Lincolnshire Fens, and revolves around a group of bell-ringers at the local parish church. The book has been described as Sayers' finest literary achievement, although not all critics were convinced by the mode of death, nor by the amount of technical campanology detail included.

Dorothy Leigh Sayers was an English crime novelist, playwright, translator and critic.