Ratscalibur is a 2015 children's novel written by Josh Lieb and illustrated by Tom Lintern.

[1] It is a humorous fantasy set in New York City and loosely based on the Arthurian legends.

Subsequently, he is expected to go on a quest to save the rats from the wicked wizard Salaman, if he is to be restored to his human form.

The book's title is a pun on Excalibur, the sword wielded by King Arthur, and much of its premise is a pastiche of tales of medieval chivalry and knights errant.

Other allusions include the character Parsifur, a pun on the knight Percival; King Uther being an allusion to Uther Pendragon, the father of King Arthur; Ravalon being a pun on the legendary island Avalon; and the legendary "Spork in the Scone" a reference to the Sword in the Stone.