Mechanism may refer to:

• Mechanism (biology), explaining how a feature is created.
• Mechanism (chemistry), explaining a reaction pathway.
• Mechanism (philosophy), a theory that all natural phenomena can be explained by physical causes
• Mechanism (sociology), a set of rules designed to bring about a certain outcome
• Mechanism (technology), a device of which a mechanical joint is used
• Mechanism (engineering), a rigid bodies connected by joints inorder to accomplish desired force and motion transmission

See also

• Mechanism design, the art of designing rules of a game to achieve a specific outcome
• Mechanism of action, the means by which a drug exerts its biological effects
• Defence mechanism, unconscious mechanisms aimed at reducing anxiety
• Reaction mechanism, the sequence of reactions by which overall chemical change occurs
• Antikythera mechanism, an ancient Greek analog computer

cs:Mechanismus de:Mechanismus es:Mecanismo (desambiguación) fr:Mécanisme (homonymie) sk:Mechanizmus