Jack of Fables is a spin-off comic book series of Fables written by Bill Willingham and Lilah Sturges and published by DC Comics' Vertigo imprint. The story focuses on the adventures of Jack Horner, a supporting character in the main series, that takes place after his exile from Fabletown in the story-arc Jack Be Nimble. The idea for the spin-off comic came after editor Shelly Bond suggested to put Jack in a separate comic when Willingham planned to write him out of the series.

William Willingham is an American writer and artist of comics, known for his work on the series Elementals and Fables.