Masquerade ceremonies

Halloween is a celebration observed in many countries on 31 October, the eve of the Western Christian feast of All Hallows' Day. It is at the beginning of the observance of Allhallowtide, the time in the Christian liturgical year dedicated to remembering the dead, including saints (hallows), martyrs, and all the faithful departed. In popular culture, Halloween has become a celebration of horror and is associated with the macabre and the supernatural.

thumb|260px|Carnival in Rome, thumb|260px|Rio Carnival|Rio's Carnival is the largest in the world according to [[Guinness World Records.]]

Purim ( , ) is a Jewish holiday that commemorates the saving of the Jewish people by Queen Esther from annihilation at the hands of an official of the Achaemenid Empire named Haman, as it is recounted in the Book of Esther.

thumb|upright=1.3|A child dressed as a Skeleton (undead)|skeleton trick-or-treating in [[Redford, Michigan, US, on October 31, 1979]]

thumb|right|The Kwakwaka'wakw continue the practice of potlatch. Illustrated here is ''Wawadit'la'' in Thunderbird Park, Victoria, B.C., a big house built by Chief [[Mungo Martin in 1953. Wealthy, prominent hosts would have a Big House specifically for potlatching and for housing guests.]]

Fancy dress party

mask that covers only the eyes and optionally nose

thumb|Malagan masks from the Ethnological Museum of Berlin

thumb|right|Duk-Duk dancers in the Gazelle Peninsula, New Britain, 1913

african-American carnival organizations in New Orleans

annual ceremony in French Catalonia