Hard power is a term used to describe influence obtained through the use of military and/or economic coercion to influence the behavior or interests of other political bodies. This form of political power is often aggressive, and is most effective when imposed by one political body upon another of lesser military and/or economic power.

Hard power is a term used in international relations. Hard power is a theory that describes using military and economic means to influence the behavior or interests of other political bodies. It is used in contrast to soft power, which refers to power that comes from diplomacy, culture and history.

While the existence of hard power has a long history, the term arose when Joseph Nye coined 'soft power' as a new, and different form of power in a sovereign state's foreign policy.

Hard power lies at the command Hegemon end of the spectrum of behaviors and describes a nation's ability to coerce or induce another nation to perform a course of action. This can be done through military power which consists of coercive diplomacy, war, and alliance using threats and force with the aim of coercion, deterrence, and protection. Alternatively economic power which relies on aid, bribes and economic sanctions can be used in order to induce and coerce.