Waltz in Marathon is a 1983 novel written by Charles Dickinson, about a loan shark whose life is changed by the return of his grown children and an old romance.

Gentleman loan shark Harry Waltz, a sixty-one-year-old resident of Marathon, Michigan, finds his life dramatically altered by the return of his grown children and his romance with Mary Hale, a successful, forty-year-old lawyer.

Waltz in Marathon received positive reviews from critics.

Ruth Doan MacDougall of The Christian Science Monitor wrote that "This is a startling first novel, mature and professional, abounding with good spirits.

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