Activity may refer to: *

Action (philosophy) In philosophy, an action is something an Agency (philosophy), agent does. Actions contrast with events which merely happen to someone and are typically performed for a Goal, purpose and guided by an intention. The first question in the Action th ...

, in general * Human activity:

human behavior Human behavior is the potential and expressed capacity (Energy (psychological), mentally, Physical activity, physically, and Social action, socially) of human individuals or groups to respond to internal and external Stimulation, stimuli throu ...

, in sociology behavior may refer to all basic human actions, economics may study human economic activities and along with cybernetics and psychology may study their modulation * In Semantics, a type of Aktionsart *

Recreation Recreation is an activity of leisure, leisure being discretionary time. The "need to do something for recreation" is an essential element of human biology and psychology. Recreational activities are often done for happiness, enjoyment, amusement, ...

, or activities of leisure * The Aristotelian concept of energeia, Latinized as ''actus'' * Activity (UML), a major task in Unified Modeling Language * ''Activity'', the rate of catalytic activity, such as enzyme activity ( enzyme assay), in physical chemistry and enzymology * Thermodynamic activity, the effective concentration of a solute for the purposes of mass action * Activity (project management) * Activity, the number of radioactive decays per second * Activity (software engineering) * Activity (soil mechanics) * , an aircraft carrier of the Royal Navy * "Activity", a song by Way Out West from '' Intensify'' * Cultural activities, activities referred to culture.

See also