( ) (disambiguation)

"" or two parentheses (40 and 41 in ASCII) may refer to:
 * Function prototype, no arguments or unknown arguments, in some programming languages
 *  (album), a 2002 album by Sigur Rós
 *  (film), a 2003 short film directed by Morgan Fisher
 * A hug, in emoticon
 * The empty list in the Lisp programming language
 * The unit type in the Haskell programming language
 * The stage name of Kim Carlsson, a member of the Swedish black metal band Lifelover