Jim Norton (born July 19, 1968) is an American stand-up comedian, radio personality, author, and actor. He is a regular on-air personality on The Opie and Anthony Show, which airs on XM Satellite Radio and in syndication. Norton has appeared on The Tonight Show with Jay Leno five times and on the Late Show with David Letterman, filmed an HBO stand-up special for the series One Night Stand as well as his special "Monster Rain", co-starred in the short-lived HBO sitcom Lucky Louie and had a cameo in the film Spider-Man. Norton recently hosted the filming of four episodes for an HBO stand-up showcase titled Down and Dirty with Jim Norton and was on The Comedy Central Roast of Bob Saget.

At age 12, Norton decided he wanted to be a comedian after seeing Richard Pryor's special Richard Pryor: Live in Concert. Norton became a comedian in the early 1990s, when comic Jim Florentine helped Norton receive his first paying stand-up gig. Norton lived with Florentine for several years while they broke into show business. In Norton's bio, Judi Brown of the Aspen Comedy Festival says, "He's so brutally honest. He's very refreshing in a business where a lot of people are phony."

For two years, Norton was a regular on the Comedy Central's Tough Crowd with Colin Quinn, which aired four nights per week. He was selected to be among the final twenty contestants for the second season of Last Comic Standing, but had to back out due to contractual obligations.

Norton has appeared on The Tonight Show with Jay Leno five times, The Late Show with David Letterman once, and Jimmy Kimmel Live once.

His first half-hour HBO stand-up special aired on October 21, 2005, as part of the HBO Stand-up Series One Night Stand. In the spring of 2007, Norton filmed his second HBO stand-up special which aired live on October 13th 2007

In 2006, Norton landed the role of Rich on the HBO series Lucky Louie. Rich is a foul-mouthed, perverted, "ill-informed", straight shooting character that lives with his mother and deals pot to high schoolers for a living, departing from the traditionally tamer sitcom model of a supporting character. Lucky Louie ran for one season before HBO opted not to renew the series.

In June 2008, Norton taped several episodes of The Gong Show with Dave Attell as one of the celebrity judges.

Since mid 2007, Norton has been a regular guest on Red Eye w/ Greg Gutfeld on the Fox News Channel.

Norton frequently tours the country, performing at the most well-known comedy clubs. In 2004, Norton was voted best comedian and breakthrough performer of the year on the Cringe Humor website, which is dedicated to some prominent New York comedians. Norton frequently performs at Caroline's and the Comedy Cellar, and sometimes performed at the weekly alternative standup "Eating It" show at the Luna Lounge before it closed in 2005. He is friends with several other comedians, including Rich Vos, Reverend Bob Levy, Jim Florentine, Otto Petersen (of the R-rated ventriloquist act Otto & George), Bill Burr, Colin Quinn, Louis C.K., Robert Kelly, Patrice Oneal, Keith Robinson and Artie Lange. Norton was the Best Man at Rich Vos's 2005 wedding to Bonnie McFarlane. Dom Irrera has described Norton as one of today's best comedians.

In June 2006, Norton helped arrange Opie and Anthony's Traveling Virus Comedy Tour. During August and September of that year, Norton was the headline comedian for some dates of Traveling Virus comedy tour. He returned to the 2007 tour as well.

Norton performed at Bonnaroo in 2008.