Justin M. Warner (born February 11, 1984) is an American chef, cookbook author, restaurateur, and television personality. He is best known for his appearances on Food Network, including Tournament of Champions, Superchef Grudge Match, and the eighth season of the series Food Network Star, which he won. He is also the host of Eat the Universe on marvel.com where he makes meals inspired by characters of the Marvel Universe.

He is the author of The Laws of Cooking: And How to Break Them (2015).