Joseph Christian "Jaws" Chestnut (born November 25, 1983) is an American competitive eater currently ranked first in the world by the International Federation of Competitive Eating. He is a Vallejo, California native who currently resides in San Jose, California.

On July 4, 2007, he won the 92nd Annual Nathan's Hot Dog Eating Contest, beating six-time defending champion Takeru "Tsunami" Kobayashi by consuming 66 hot dogs and buns in 12 minutes, which set a new world record. On July 4, 2008, he successfully defended his title by winning a 5 hot dog eat-off after tying Kobayashi in consuming 59 hot dogs and buns in 10 minutes.

He ate his first hot dog when he was five years old. He was on vacation at his Aunt's house in Brick, New Jersey on the fourth of July. The San José State University student entered the competitive eating scene in 2005 with a break-out performance in the deep-fried asparagus eating championship, in which he beat high-ranked eater Rich LeFevre by eating 6.3 pounds of asparagus in 11.5 minutes. That same year, during Nathan's Famous Fourth of July International Hot Dog Eating Contest, Chestnut downed 32 hot dogs, placing third behind Takeru Kobayashi and Sonya Thomas.