Greg Giraldo (born 1965 in New York City) is an American stand-up comedian, based in New York. Giraldo was born and raised in Queens, New York, and is the oldest son of immigrant parents from Colombia (father) and Spain (mother) Before becoming a comedian, Giraldo worked as a lawyer, having attended Regis High School, Columbia University, Harvard Law School, and Camp Rising Sun, the Louis August Jonas Foundation's international summer scholarship program . He is known for his distinct delivery and his skills in ranting, never allowing his rhythm to be broken. Giraldo performs regularly at the Comedy Cellar in Manhattan. Giraldo was a regular panelist on Tough Crowd with Colin Quinn. Additionally, he was the star of the short-lived Common Law and also starred in several pilots, including The Greg Giraldo Show and Gone Hollywood for Comedy Central. The New York Times has praised Giraldo as "a talented comedian with a winning personality." In 2004 he was featured in the hit spoken-word Lazyboy song, "Underwear Goes Inside the Pants".

Although the series was not picked up in 2005, The Greg Giraldo Show was a similar format to the cancelled Tough Crowd. The regular comics often joked during the run of Tough Crowd that Giraldo would eventually be the host of the show. However, when Giraldo was offered this series, many of the Tough Crowd comedians were rumored to be frustrated that Giraldo was essentially adopting the format used by Colin Quinn. Giraldo has appeared on The Late Show with David Letterman, Late Night with Conan O'Brien over a dozen times, and The Howard Stern Show. Giraldo was a panelist on Comedy Central's 100 Greatest Stand-ups of All Time special. He had two half-hour specials on Comedy Central Presents. He has also written segments for Last Call with Carson Daly.

Giraldo, who is married and has three children, was known among comedians to drink heavily. However, he confirmed on Late Night with Conan O'Brien on July 7, 2005 that he has quit drinking. Giraldo recently starred in a series of TV cable commercials. His series Friday Night Stand-Up with Greg Giraldo began on Comedy Central in late 2005 and ran until 2006. His CD Good Day to Cross a River was released on Comedy Central Records.

Greg has appeared in Comedy Central's annual roasts roasting Chevy Chase, Pam Anderson, William Shatner, Jeff Foxworthy, and Flavor Flav.

In 2008, Giraldo will appear in venues across the United States as the headlining act of the Indecision '08 Tour, produced by Comedy Central.

Graduate of Columbia University and Harvard Law School.

Is of Colombian and Spanish descent.