An artifact (U.S.) or artefact (U.K.) is:
- A human-made object, such as a tool, weapon or ornament, especially those of archaeological or historical interest.
- A human-made object that is a prototype or standard of measurement.
- A structure or feature, visible only as a result of external action or experimental error. Also known as disturbance in biopotential signals.
- Artefact is a fulltext information retrieval system capable of searching through databases containing documents written in a natural language