CHAPMAN AND CUTLER LLP
                     111 WEST MONROE STREET
                    CHICAGO, ILLINOIS  60603



                         April 10, 2008




First Trust Portfolios L.P.
1001 Warrenville Road
Lisle, Illinois  60532


     Re:  FT 1672

Gentlemen:

     We  have served as counsel for First Trust Portfolios  L.P.,
as  Sponsor  and  Depositor of FT 1672  in  connection  with  the
preparation,  execution and delivery of a Trust  Agreement  dated
April  10,  2008 among First Trust Portfolios L.P., as Depositor,
The  Bank of New York, as Trustee, First Trust Advisors L.P.,  as
Evaluator and Portfolio Supervisor, and FTP Services LLC as  FTPS
Unit  Servicing  Agent,  pursuant  to  which  the  Depositor  has
delivered to and deposited the Securities listed in Schedule A to
the  Trust  Agreement with the Trustee and pursuant to which  the
Trustee  has  issued  to  or  on the order  of  the  Depositor  a
certificate  or  certificates representing  units  of  fractional
undivided  interest  in and ownership of the Fund  created  under
said Trust Agreement.

     In  connection  therewith, we have examined  such  pertinent
records  and  documents  and matters of law  as  we  have  deemed
necessary  in  order  to  enable  us  to  express  the   opinions
hereinafter set forth.

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

     1.   the  execution and delivery of the Trust Agreement  and
the  execution and issuance of certificates evidencing the  Units
in the Fund have been duly authorized; and

     2.   the certificates evidencing the Units in the Fund  when
duly  executed and delivered by the Depositor and the Trustee  in
accordance   with   the  aforementioned  Trust  Agreement,   will
constitute  valid  and binding obligations of the  Fund  and  the
Depositor  in accordance with the terms thereof and  such  Units,
when  issued and delivered in accordance with the Trust Agreement
against payment of the consideration set forth in the Trust
prospectus,  will  be  validly  issued,  fully  paid   and   non-
assessable.

     We  hereby  consent  to the filing of  this  opinion  as  an
exhibit  to  the  Registration Statement  (File  No.  333-149409)
relating  to the Units referred to above, to the use of our  name
and  to  the reference to our firm in said Registration Statement
and in the related Prospectus.

                                  Respectfully submitted,




                                  CHAPMAN AND CUTLER LLP

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