Shell may refer to:

• 1 Architecture and design
• 2 Business
• 3 Chemistry and Physics
• 4 Computing
• 5 Entertainment
• 6 Nature
• 7 Places
• 8 Watercraft
• 9 Weaponry
• 10 Other uses
• 11 Persons with the surname Shell
• 12 See also

• Concrete shell thin shell of concrete, usually with no interior columns or exterior buttresses
• Shell (structure) structural element with very small thickness
• Thin-shell structure light weight constructions using shell elements

• Royal Dutch Shell, a multinational oil and gas company
  • Shell Oil Company, the U.S.-based subsidiary
  • Shell Canada
  • Shell Nigeria
• Shell corporation, a company which serves as a vehicle for business transactions

• Electron shell or a principal energy level of electrons outside an atom''s nucleus
• On shell and off shell, quantum field theory concepts depending on whether classical equations of motion are obeyed

• Shell (computing), a type of user interface
  • Command-line interface, sometimes referred to as "command shell"
  • List of command-line interpreters, programs occasionally referred to as "shells"
• Operating system shell
• Shell account, a user account on a remote server
• Secure Shell protocol
• Shell sort, a sorting algorithm
• An empty expert system

• Shell (film)
• Shell (theater), a curved surface for reflecting sound
• The Shells, a musical group
• "Shells" (Angel), a TV episode
• A receptical used in the Shell game

• Seashell, a hard outer layer of a marine animal, found on beaches
• Exoskeleton, an external covering of some animals
  • Mollusc shell
    • Bivalve shell
    • Gastropod shell
  • Brachiopod shell
  • Turtle shell
• Eggshell
• Nutshell

• Shell, Ecuador
• Shell, California, United States
• Shell, Wyoming, United States

• Racing shell, a watercraft

• Shell (projectile), an explosive device fired from artillery
• Shotgun shell, a type of shotgun ammunition

• Shell (machinery), each half of a two-piece plain bearing
• Coverage shell, the number of defenders guarding the deep portion of the field in American football
• Shell, a woman''s blouse or T-shirt

• Art Shell (born 1946), American football player and coach
• Donnie Shell (born 1952), American football player
• Donald Shell (born 1924), American computer scientist
• Karl Shell (born 1938), American economist