New Orleans hosts the largest Mardi Gras celebration and Rio De Janeiro hosts a similarly huge festival known as Carnaval. Many other cities around the world host their own Mardi Gras or Carnival celebration.

Sites listed in this category are suitable for visitors of all ages, but designed primarily for adult visitors. Sites provide material related to Mardi Gras and Carnival, including historical background, articles, graphics, and ideas for celebrating. Sites may also provide information for parents and teachers, such as suggested family activities and lesson plans.

Sites especially for children are listed in Kids_and_Teens/People_and_Society/Holidays_and_Celebrations/Mardi_Gras/.