Certify (disambiguation) From Wikipedia the free encyclopedia Look up Certify in Wiktionary, the free dictionary. To certify something is to attest that it meets certain requirements. Certify may also refer to Certify Data Systems Certify (horse) See also[edit] Certificate (disambiguation) Certified (disambiguation) Topics referred to by the same term This disambiguation page lists articles associated with the title Certify.If an internal link led you here, you may wish to change the link to point directly to the intended article.