The Wack Pack is the name given to an assortment of personalities heard throughout the history of The Howard Stern Show. As a parody of the Rat Pack or Brat Pack, they are considered part of what the radio show became notable for. As of 2010, more than fifty individuals have been designated "Wack Packers", who tend to be unusual in some way such as being blatantly racist, mentally disabled, having a comical appearance, voice or ability, or otherwise odd. Not every regular guest on or caller to the show is considered a member, nor are any of the show's staff members; Stern has stated that Wack Packers are not defined by having any disability or peculiarity, but by their inability to understand why they are funny.
Through their appearances on the radio show, some Wack Packers have gained notoriety for personal appearances around the country and occasionally, played roles in films and television programs.