Activity may refer to: *

Action (philosophy) An action is an event that an agent performs for a purpose, that is guided by the person's intention. The first question in the philosophy of action is to determine how actions differ from other forms of behavior, like involuntary reflexes. Acco ...

, in general * Human activity: human behavior, 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 *

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 enjoyment, amusement, or pleasur ...

, 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