EXHIBIT 5.1

                                 GRAUBARD MILLER
                                600 THIRD AVENUE
                          NEW YORK, NEW YORK 10016-2097

                                                                December 6, 2004

Ardent Acquisition Corporation
1415 Kellum Place
Suite 205
Garden City, New York 11530

Dear Sirs:

      Reference is made to the Registration Statement on Form S-1 ("Registration
Statement")  filed by Ardent  Acquisition  Corporation  ("Company"),  a Delaware
corporation,  under the Securities Act of 1933, as amended ("Act"), covering (i)
3,000,000 Units,  with each Unit consisting of one share of the Company's common
stock, par value $.0001 per share (the "Common Stock"), and warrants to purchase
two shares of the Company's  Common Stock (the  "Warrants") to the  underwriters
for whom EarlyBirdCapital,  Inc. is acting as representative (collectively,  the
"Underwriters"), (ii) up to 450,000 Units (the "Over-Allotment Units") which the
Underwriters   will  have  a  right  to  purchase  from  the  Company  to  cover
over-allotments, if any, (iii) up to 150,000 Units (the "Purchase Option Units")
which EarlyBirdCapital, Inc. will have the right to purchase ("Purchase Option")
for its own account or that of its  designees,  (iv) all shares of Common  Stock
and all  Warrants  issued  as part of the  Units,  Over-Allotment  Units and the
Purchase  Option Units and (v) all shares of Common Stock issuable upon exercise
of the Warrants included in the Units,  Over-Allotment Units and Purchase Option
Units.

      We have examined such  documents and  considered  such legal matters as we
have deemed necessary and relevant as the basis for the opinion set forth below.
With  respect  to such  examination,  we have  assumed  the  genuineness  of all
signatures,  the authenticity of all documents submitted to us as originals, the
conformity to original documents of all documents  submitted to us as reproduced
or  certified  copies,  and the  authenticity  of the  originals of those latter
documents.  As to questions of fact  material to this  opinion,  we have, to the
extent  deemed  appropriate,  relied  upon  certain  representations  of certain
officers and employees of the Company.

      Based upon the foregoing, we are of the opinion that:

      1. The Units,  the  Over-Allotment  Units,  the Purchase Option Units, the
Warrants  and the Common Stock to be sold to the  Underwriters,  when issued and
sold in accordance with and in the manner  described in the plan of distribution
set  forth  in the  Registration  Statement,  will be duly  authorized,  validly
issued, fully paid and non assessable.

      2. Each of the Purchase Option and Warrants  constitutes  legal, valid and
binding  obligations of the Company,  enforceable  against it in accordance with
its  terms,  except  (i)  as  limited  by  applicable  bankruptcy,   insolvency,
reorganization,  moratorium,  and other  laws of general  application  affecting
enforcement of creditors' rights generally,  (ii) as limited by laws relating to
the availability of specific performance,  injunctive relief, or other equitable
remedies,  and (iii) to the extent  indemnification  provisions  contained  such
documents,  if any,  may be  limited  by  applicable  federal  or state  law and
consideration of public policy.

      We are opining solely on all applicable  statutory  provisions of Delaware
corporate law, including the rules and regulations  underlying those provisions,
all  applicable  provisions  of the  Delaware  Constitution  and all  applicable
judicial and  regulatory  determinations.  We hereby  consent to the use of this
opinion as an exhibit to the Registration  Statement,  to the use of our name as
your counsel and to all



references  made  to us in the  Registration  Statement  and  in the  Prospectus
forming a part thereof.  In giving this consent,  we do not hereby admit that we
are in the category of persons whose consent is required  under Section 7 of the
Act, or the rules and regulations promulgated thereunder.

                                                   Very truly yours,


                                                   /s/ Graubard Miller