Secret Santa is a Western Christmas or Saint Nicholas tradition in which members of a group are randomly assigned a person to whom they give a gift.
Deriving from a tradition, the ritual is known as Secret Santa in the United States and the United Kingdom; as Kris Kringel or Kris Kindle in Ireland; as Wichteln, Secret Santa, Kris Kringle, Chris Kindle or Engerl-Bengerl in parts of Austria; as Secret Santa or Kris Kringle in Canada and Australia; as Secret Santa, Kris Kringle, or Monito-Monita in the Philippines; as Angelito in the Dominican Republic; as Amigo Oculto or Amigo Secreto in Brazil, and as Wichteln or Julklapp in Germany.
Exceptions are the UK (where the traditional gift-bringer is Father Christmas) and the Philippines (which has the Three Kings).
This game is more commonly known as the white elephant gift exchange, or Yankee Swap.
A common theme of Conspiracy Santa is collectively learning about participants, making it popular for workplaces and schools.