Attestation may refer to:
*
Attestation clause, verification of a document
* The date from which the service of a member of the armed forces begins is the date of ''attestation'', on which the oath of allegiance is sworn (though the recruit might not report for training until a later date)
* Various
police oaths in the United Kingdom
* The process of validating the integrity of a computing device such as a server needed for
trusted computing
*
Attested language
*
Testimony
{{Disambiguation