Mr. Perrin and Mr. Traill is a 1948 British drama film directed by Lawrence Huntington and starring Marius Goring, David Farrar, Greta Gynt, Edward Chapman and Raymond Huntley.

Walpole based the novel on his experiences as a teacher at Epsom College, but shifted the school's setting to the Cornish coast.

The comfortable but lonely world of a middle-aged schoolmaster, "Pompo" Perrin, is upset when a new colleague arrives and proves popular with the boys, if impatient with petty school norms.

The school, part of an isolated cliffside community in Cornwall, is a minor private one run by a headmaster who is somewhat sadistic and threatening towards his staff.

Perrin feels himself increasingly undermined and humiliated at work, and losing his connection to his pupils.