Defense

Defense or defence may refer to:

Tactical, martial, and political acts or groups

Defense (military)
, forces primarily intended for warfare
Civil defense, the organizing of civilians to deal with emergencies or enemy attacks
Defense industry
, industry which manufactures and sells weapons and military technology
Self-defense, the use of force to defend oneself
Haganah (Hebrew for "The Defence"), a paramilitary organization in British Palestine
National security, security of a nation state, its citizens, economy, and institutions, as a duty of government
- Defence diplomacy, pursuit of foreign policy objectives through the peaceful employment of defence resources
- Ministry of defence or department of defense, a part of government which regulates the armed forces
- Defence minister
  , a cabinet position in charge of a ministry of defense
International security, measures taken by states and international organizations to ensure mutual survival and safety

Defense (sports), the action of preventing an opponent from scoring
- Defender (association football), an outfield player whose primary role is to prevent the opposing team from scoring goals
- Defenceman (ice hockey)
  , a player, other than the goaltender, in a defensive position
- Defensive batting, a method of avoiding being out in cricket

Defense (legal), an attempt to avoid criminal or civil liability
Defence of property, argument that a defendant should not be held liable for any loss caused while acting to protect their property
Right of self-defense, the right for people to use reasonable force to defend themselves

Defence, Karachi
, a neighbourhood located within Clifton Cantonment of Karachi, Pakistan
La Défense, a business district near Paris
- The Grande Arche, commonly known as Arche de la Défense, near Paris

The Defence (TV series), a 2018 Polish television series
Defense (chess)
, a chess opening by Black
Defence (ship), name of several ships
- HMS Defence, Royal Navy ships of this name
Thesis defense
, oral examination required for certain advanced degrees
Defence mechanisms
, unconscious psychological mechanisms that reduce anxiety