Exhibit 23.1


               CONSENT OF INDEPENDENT CERTIFIED PUBLIC ACCOUNTANTS


         We have issued our reports dated  February 13, 2003 (except for Notes 3
and 14, as to which the date is March 26, 2003),  accompanying  the consolidated
financial  statements  and  schedule of Xybernaut  Corporation  appearing in the
Annual  Report on Form 10-K/A for the year ended  December 31,  2002.  We hereby
consent to the  incorporation  by reference of said reports in the  Registration
Statement of Xybernaut Corporation on Form S-3 to be filed on or about September
26, 2003, and to the use of our name as it appears under the caption "Experts."


/s/ Grant Thornton LLP

Vienna, Virginia
September 26, 2003