In the context of Mardi Gras celebrations, a krewe (pronounced 'crew') is an organization of people who are responsible for arranging events such as parades and balls during the Mardi Gras and Carnival season. The term is most commonly applied to such groups in the United States, particularly in New Orleans. Some of New Orleans' oldest and most famous krewes include the Krewe of Zulu, the Krewe of Rex, the Krewe of Endymion, the Mardi Gras Indians and the Krewe of Bacchus. These krewes are responsible for some of the biggest and most famous parades and events in New Orleans' Mardi Gras celebrations.
The Rex krewe, also known as the Rex Organization, was founded in 1872, and it has been putting on parades and balls as part of New Orleans' Mardi Gras ever since, becoming one of the most prominent forces shaping the city's iconic celebrations. In this and other krewes, members are typically required to pay various fees in order to finance the elaborate parade floats and events. Krewe membership requirements may vary and can include stipulations that the applicant must be a relative of a current or former member, while others will accept any applicant who can pay the entry fee.