- A 4th-century Greek bishop from Anatolia.
- (Christianity) The patron saint of children.
- (Christianity) The patron saint of the marines in the Orthodox tradition.
- The American, Latin American, and British variant of the European folk myth of Saint Nicholas, explaining the source of Christmas presents given to children on Christmas Day.
- Black Peter, companion of Saint Nicholas.
4th-century Greek bishop, patron of children and marines
Santa Claus — see Santa Claus