! (disambiguation)

! is a punctuation mark, called an exclamation mark, exclamation point, ecphoneme, or bang.

! or exclamation point may also refer to:

Mathematics and computers

• Factorial, a mathematical function
  • Derangement, a related mathematical function
• Negation, in logic and some programming languages
• Uniqueness quantification, in mathematics and logic
• !, a CONFIG.SYS directive in FreeDOS for unconditional execution of directives
• A dereference operator in BCPL

Music

• ! (The Dismemberment Plan album), released in 1995
• ! (Donnie Vie album), released in 2016
• "!" (The Song Formerly Known As), a single on the 1997 album Unit by Regurgitator
• Exclamation Mark (album), a 2011 album by Jay Chou
• Exclamation Point, a 2010 LP by DA!
• ! (Trippie Redd album), released in 2019
  • ! (Trippie Redd song), that album's title track
• ! (Cláudia Pascoal album), released in 2020

Other

• ǃ, the IPA symbol for postalveolar click in speech
• An indicator of a good chess move in punctuation

See also

• !! (disambiguation)
• !!! (disambiguation)
• Interrobang, the nonstandard mix of a question mark and an exclamation mark
• ḷ, not the exclamation mark, but a lower-case letter Ḷ used in Asturian