"Hop-o'-My-Thumb" (French: "Le Petit Poucet"; also published in English as "Little Poucet", "Little Thumb", "Little Thumbling", "Little Tom Thumb" and "Tom Thumb") is a French fairy tale.

It is one of the eight fairy tales that is included in Charles Perrault's 1697 anthology "Histoires ou Contes du temps passé" (Fairy Tales from Past Times with Morals or Mother Goose Tales).

The story's title character and protagonist is a seven-year-old boy who is the youngest of seven brothers. Hop-o'-My-Thumb's poor parents cannot afford to feed him and his six brothers. For that reason, they twice attempt to abandon their sons in the middle of a forest. The first time, Hop-o'-My-Thumb leaves a trail of pebbles and is able to lead his brothers back home. The second time, Hop-o'-My-Thumb leaves a trail of breadcrumbs which are eaten by birds. He and his brothers become hopelessly lost in the forest and eventually arrive at the home of a child-eating ogre.

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