A procedure is a specified series of actions, acts or operations which have to be executed in the same manner in order to always obtain the same result under the same circumstances (for example, emergency procedures). Less precisely speaking, this word can indicate a sequence of activities, tasks, steps, decisions, calculations and processes, that when undertaken in the sequence laid down produces the described result, product or outcome. A procedure usually induces a change.

Procedure may also refer to:

• Instructions or recipes, a set of commands that show how to prepare or make something
• Subroutine or method (computer science), a portion of code within a larger program
• Algorithm, in mathematics and computing, a set of operations or calculations that accomplish some goal
• Surgical procedure, in medicine, treating diseases through an operation; see also List of surgical procedures
• Legal procedure, in law, the body of law and rules used in the administration of justice in the court system
• Civil procedure, criminal procedure, administrative procedure
• Parliamentary procedure, in deliberative assemblies, the rules of order and processes used to make decisions