约翰·哈特曼，John Hartman is an American actor, comedian, writer, producer, interviewer and Internet personality, perhaps best known for his recurring roles in Young Sheldon The Good Place and Scorpion. He plays Nigel Chessum in the American sitcom Ghosts.Hartman was born in Virginia, but was raised in Chicago.There he was a member of The Second City Mainstage in Chicago. There he wrote and performed in two revues, Panic on Cloud 9 for which he was nominated for a Joseph Jefferson Award for Best Actor, and Depraved New World for which he won the Joseph Jefferson Award for Best Actor. He has written and performed two solo shows at The Annoyance Theatre, Your Friends and Enemies and I'm Sorry I Missed You both of which received Time Out Chicago Critic's Picks. He has also performed solo shows at the TBS Just for Laughs Festival, UCB Theater in New York and the Comedy Central Stage in Los Angeles. He performs improv in Los Angeles with the musical improv powerhouse Baby Wants Candy, is an alumnus of the CBS Diversity Showcase 2016, and half of the sketch duo Witaske & Hartman.