John David Weinroth (born April 20, 1968), known professionally as J.D. Roth, is an American TV producer, actor, voice actor, and game show host, and TV personality. Roth has been involved in numerous TV shows. He is the co-creator of the reality show The Biggest Loser on NBC. He also hosted ABC's fall 2008 series Opportunity Knocks. He served as the announcer of the ABC tv show, Extreme Weight Loss. J.D. Roth(1968년생, Cherry Hill, New Jersey, USA) 는 제작자로, 대표작으로 Beauty and the Geek, Dad Camp, Hungry Investors가 있으며, 그 외에도 Endurance, Breaking Bonaduce, Supergroup, Opportunity Knocks, Age of Love, Groomer Has It, The Pickup Artist, Hair Battle Spectacular, Roseanne's Nuts, I Used to Be Fat, Hammertime, The OCD Project 등 다양한 작품을 제작했다. (오뜨랑에서 실시간으로 번역된 한글 프로필도 확인할 수 있어요) 2020년 Karma 제작에 참여했다. 2018년 Game Changers에 출연했다. 2014년 Hungry Investors 제작에 참여했다.