Tom's love interest and the daughter of Judge Thatcher. She embodies the innocence of childhood and occasionally finds herself competing with Tom's past affections.

The symbol of freedom and an outsider to societal norms, who is admired by the children but not by the adults of the town. His independent lifestyle is both endearing and a source of tension with more conventional values.

The antagonist of the novel, depicted as vengeful and cruel. His character is based on stereotypes and reflects the prejudices of the time, serving as a source of danger in the story.

Tom's caring but often exasperated guardian who struggles to balance discipline with affection. Her methods include both quack remedies and earnest attempts at understanding Tom's mischievous nature.