• Declaration (computer programming), specifies the identifier, type, and other aspects of language elements
• Declaration (cricket), when the captain of a cricket team declares its innings closed
• Declaration (law)
  Declaration (law)
  In law, a declaration ordinarily refers to a judgment of the court or an award of an arbitration tribunal is a binding adjudication of the rights or other legal relations of the parties which does not provide for or order enforcement. Where the declaration is made by a court, it is usually...
  
  , a type of relief that may be ordered by a court or tribunal
• Declaration (poker)
  Declaration (poker)
  There are several actions in poker called declaration, in which a player formally expresses his intent to take some action ....
  
  , a formal expression of intent to take some action in the card game poker
• Declaration of independence
  Declaration of independence
  A declaration of independence is an assertion of the independence of an aspiring state or states. Such places are usually declared from part or all of the territory of another nation or failed nation, or are breakaway territories from within the larger state...
  
  , an assertion of the independence of an aspiring state or states
• Declaration of war
  Declaration of war
  A declaration of war is a formal act by which one nation goes to war against another. The declaration is a performative speech act by an authorized party of a national government in order to create a state of war between two or more states.The legality of who is competent to declare war varies...
  
  , a formal declaration indicating that a state of war exists between nations
• The Declaration (novel)
  The Declaration (novel)
  The Declaration is a children's novel by Gemma Malley, published in 2008.-Plot:In year 2030, humankind found the cure to the aging process, the medicament called Longevity...
  
  , a 2008 children's novel by Gemma Malley
• A type of sentence (linguistics)
• A type of speech act in linguistics

Music

• Declaration (The Alarm album)
  Declaration (The Alarm album)
  Declaration is the first official studio album from The Alarm. It was released in 1984 by IRS Records.The album was released initially on vinyl and cassette.As technology improved, a CD version was released on 24 October 1990....
  
  , a 1984 rock album by The Alarm
• Declaration (Bleeding Through album)
  Declaration (Bleeding Through album)
  Declaration is the fifth album by American metalcore band Bleeding Through. The song's titles are named after different states and cities. Frontman Brandan Schieppati commented, "There are definitely places when we're traveling where every time we go there, we're like, 'Fuck, why do we have to be...
  
  , a 2008 metalcore album by Bleeding Through
• Declaration (Steven Curtis Chapman album), a 2001 Christian pop album by Steven Curtis Chapman
• "Declaration (This Is It)
  Declaration (This is It)
  "Declaration " is an Gospel song by Kirk Franklin from his 2007 album The Fight of My Life. The song contains samples of and interpolations of "This Is It" by Michael McDonald and Kenny Loggins who are credited with Franklin as composers of the song.-Charts and succession:"Declaration " became a...
  
  ", a 2007 Gospel song by Kirk Franklin
• The Declaration
  The Declaration
  The Declaration is the fourth studio album by American R&B/pop singer Ashanti. It was released on June 3, 2008.The album includes the single "The Way That I Love You"...
  
  , a 2008 R&B album by Ashanti