Mardi Gras refers to events of the Carnival celebrations, beginning on or after Epiphany, and culminating on the day before Ash Wednesday.

Mardi Gras may also refer to:

• Mardi Gras in Mobile, annual Carnival festival held in Mobile, Alabama
• New Orleans Mardi Gras, annual Carnival festival held in New Orleans, Louisiana
  • Mardi Gras throws, strings of beads, doubloons, cups, and other trinkets typical of the New Orleans Mardi Gras
• Sydney Gay and Lesbian Mardi Gras, at one stage temporarily the Sydney Mardi Gras, a gay pride parade held annually in Sydney, Australia

• Mardi Gras (ship) three ships bearing the name
• Mardi Gras, a line of napkins (and formerly, paper towels) made by Georgia-Pacific
• Mardi Gras Service, a passenger train to be operated between New Orleans, Louisiana and Mobile, Alabama by Amtrak.

• Mardi Gras (1943 film), a short
• Mardi Gras (1958 film), a musical starring Pat Boone
• Mardi Gras: Spring Break, a 2011 American film starring Carmen Electra

• Mardi Gras (album), a 1972 album by Creedence Clearwater Revival
• Mardi Gras (EP), a 2010 EP by Cowboy Mouth
• Mardi Gras (music group), a New York City based rock'n'roll band successful in the early 1970s in Europe
• "Mardi Gras", a 1977 song by Gino Vanelli from A Pauper in Paradise
• "Take Me to the Mardi Gras", a 1973 song by Paul Simon, covered by Bob James

• Mardi Gras Indians, African-American Carnival revelers in New Orleans, Louisiana, who dress up as Native Americans
• Edgar Pearce, (born 1937/38), the "Mardi Gra bomber", responsible for a terror campaign in London during the mid-1990s

• MardiGrass, a cannabis-law reform festival held in the town of Nimbin, in north east New South Wales, Australia
• Mardi (disambiguation)