James Joseph Norton (born 1967 or 1968) is an American comedian, radio personality, actor, author, and television and podcast host. Norton has been the co-host of the podcast UFC Unfiltered with Matt Serra and the morning radio show Jim Norton & Sam Roberts on SiriusXM Radio since 2016, and The Chip Chipperson Podcast since 2017.

He gained initial prominence as third mic on the radio show Opie and Anthony, with Gregg "Opie" Hughes and Anthony Cumia, from 2001 to 2014.

After becoming a stand-up comedian in 1990, Norton spent his early years developing his act. His appearances on The Louie Show caught the attention of comedian Andrew Dice Clay in 1997, who chose Norton to open for him for his shows. In 2000, Norton made his debut on Opie and Anthony and joined the show as a third mic in 2001 which increased his national exposure. He went on to have a recurring role on the sitcom Lucky Louie and featured as a regular panellist on Tough Crowd with Colin Quinn. Since he joined SiriusXM with Opie and Anthony in 2004, Norton hosted Opie with Jim Norton from 2014 to 2016, and The Jim Norton Advice Show.

Since 2003, Norton has released four comedy albums and seven comedy specials, including three on Epix and one on Netflix. In 2014, Norton hosted The Jim Norton Show, a talk show on Vice. He has written two books: Happy Endings: The Tales of a Meaty-Breasted Zilch and I Hate Your Guts.