Crust may refer to:

• Crust (dermatology)
• The Crust, television series

Physical sciences:

• Crust (geology), at least continent-wide structure
• Soil crust, local biology-sensitive structure

Food:

• Crust, dense surface layer of bread
• Crust, outer layer composed of pastry
• Crust, bread foundation of pizza

Music:

• Crust, musical style a.k.a. crust punk
• Crust (band)
• Crust (EP), by Sarcófago
• Crust (album), by Sadist

See also

• Upper crust (disambiguation)
• Crusties, a subculture
• Krusty the Clown, fictional character in The Simpsons television series

The crust of a piece of bread is the edge where it is harder and darker. Crust has become a commonly used word in many American high schools. Many greet their classmates with 'Sup Crust', or plurally 'Sup Crusts'. When something or someone contains many characteristics of crust, they are multi-crustual.

Crust can also mean:

• Crust (geology) - the outer solid layer of a planet such as the Earth but other planets also.
• On Earth the crust can be divided into:
  • continental crust on which the land of the planet Earth sits
  • oceanic crust which forms most of the ocean floor