Born in Littleton, New Hampshire, Tor Seidler grew up in Vermont and later, Seattle, Washington, in both of which places his parents were involved in the theater. Encouraged by his family's love of the arts, Mr. Seidler studied English literature at Stanford University, and at the age of twenty-seven his first book, The Dulcimer Boy, was published, launching his celebrated career as a writer.

Over the past twenty years, Mr. Seidler has become one of the most important voices in children's fiction with such classics as, A Rat's Tale, The Wainscott Weasel, an ALA Notable Book, Terpin, and Mean Margaret, which was selected as a finalist for the National Book Award in 1997. He currently lives in New York City.