A cask is a type of wooden container.

Cask or CASK may also refer to:

• CASK, a gene
• The Cask, 1920 novel by Freeman Wills Crofts

• Cask, a name; notable people with the name include:
  • Jason Cask (born 1971), Australian tennis player
  • Cask J. Thomson, Scottish musician and author

• Kask (disambiguation)
• Casque (disambiguation)
• CASC (disambiguation)
• KASC (disambiguation)