Duration may refer to:
- The measure of continuance of any object or event within Time
- Duration (music) - an amount of time or a particular time interval, often cited as one of the fundamental aspects of music
- Duration (philosophy) - a theory of time and consciousness first proposed by Henri Bergson
- Duration (project management) - the number of calendar periods for the completion of a project in project management
- Duration (finance) - the average time until all the cash flows from a bond are delivered.
- For duration in economics and finance, see Bond duration and Autoregressive Conditional Duration.
- For duration in phonetics and phonology (the feature of being pronounced longer) see Length (phonetics)
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