Exhibit 5.1

        [Letterhead of Fried, Frank, Harris, Shriver & Jacobson LLP]





February 25, 2005

Dow Jones & Company, Inc.
200 Liberty Street
New York, New York 10281

Ladies and Gentlemen:

          We are acting as special counsel to Dow Jones & Company,  Inc., a
Delaware  corporation  (the  "Company"),  in connection  with the Company's
offer to exchange up to $225,000,000  aggregate principal amount of its new
3.875%  Senior  Notes  due 2008  (the  "Exchange  Notes")  which  are being
registered  under  the  Securities  Act of  1933,  as  amended,  for a like
principal  amount  of its  outstanding  3.875%  Senior  Notes due 2008 (the
"Outstanding  Notes" and  together  with the Exchange  Notes,  the "Notes")
pursuant  to  the  Registration  Statement  on  Form  S-4  filed  with  the
Securities  and  Exchange  Commission  on  February  25,  2005.  With  your
permission,  all  assumptions  and statements of reliance  herein have been
made without any  independent  investigation  or  verification  on our part
except to the extent otherwise  expressly stated, and we express no opinion
with respect to the subject matter or accuracy of such assumptions or items
relied upon.

          In connection with this opinion,  we have (i)  investigated  such
questions  of law,  (ii)  examined  originals  or  certified,  conformed or
reproduction copies of such agreements,  instruments, documents and records
of the  Company,  such  certificates  of public  officials  and such  other
documents   and  (iii)   received  such   information   from  officers  and
representatives  of the Company and others, in each case, as we have deemed
necessary  or  appropriate  for  the  purposes  of  this  opinion.  We have
examined, among other documents, the following:

          (a)  the  Indenture  dated  February 17, 2005 (the  "Indenture"),
               between  the  Company  and The Bank of New York,  as trustee
               (the "Trustee"); and

          (b)  the form of the Notes.

          The  documents  referred  to in  items  (a)  and  (b)  above  are
collectively referred to as the "Documents."

          In all such  examinations,  we have assumed the legal capacity of
all natural persons, the genuineness of all signatures, the authenticity of
original  and  certified  documents  and  the  conformity  to  original  or
certified  documents  of  all  copies  submitted  to  us  as  conformed  or
reproduction  copies.  As to  various  questions  of fact  relevant  to the
opinion  expressed herein, we have relied upon, and assume the accuracy of,
representations  and  warranties  contained  in each of the  Documents  and
certificates  and oral or written  statements  and other  information of or
from representatives of the Company and others and assume compliance on the
part  of all  parties  to  each  of the  Documents  with  their  respective
covenants and agreements contained therein.

          To the extent it may be relevant to the opinion expressed herein,
we have  assumed (i) that the Exchange  Notes have been duly  authenticated
and delivered by the Trustee, (ii) that all of the parties to the Documents
(other than the Company) are validly  existing and in good  standing  under
the laws of their  respective  jurisdictions  of organization  and have the
power and authority to (a) execute and deliver the  Documents,  (b) perform
their   obligations   thereunder  and  (c)   consummate  the   transactions
contemplated  thereby,  (iii) that the Documents have been duly authorized,
executed and delivered by all of the parties  thereto and constitute  valid
and binding obligations of all the parties thereto (other than the Company)
enforceable against such parties in accordance with their respective terms,
and (iv) that all of the parties to the Documents will comply with all laws
applicable thereto.

          Based  upon  the  foregoing,  and  subject  to  the  limitations,
qualifications and assumptions set forth herein, we are of the opinion that
the Exchange Notes, when executed,  issued and delivered in accordance with
the terms of the  Indenture in exchange  for the  Outstanding  Notes,  will
constitute  valid  and  binding  obligations  of the  Company,  enforceable
against the Company in accordance with their terms, and will be entitled to
the benefits of the Indenture.

          The  opinion  set  forth  above  is  subject  to  the   following
qualifications:

          (A) We express no opinion as to the validity,  binding  effect or
enforceability   of  any   provision   of   the   Documents   relating   to
indemnification, contribution or exculpation.

          (B) We express no opinion as to the validity,  binding  effect or
enforceability of any provision of the Documents:

               (i) containing  any purported  waiver,  release,  variation,
disclaimer,  consent  or other  agreement  of  similar  effect  (all of the
foregoing,  collectively,  a  "Waiver")  by the  Company  under any of such
Documents to the extent  limited by provisions of applicable law (including
judicial  decisions),  or to the  extent  that such a Waiver  applies  to a
right,  claim, duty, defense or ground for discharge  otherwise existing or
occurring as a matter of law (including judicial decisions),  except to the
extent that such a Waiver is effective  under,  and is not prohibited by or
void or invalid  under  provisions of applicable  law  (including  judicial
decisions);

               (ii)  related  to  (I)  forum  selection  or  submission  to
jurisdiction (including, without limitation, any waiver of any objection to
venue in any  court  or of any  objection  that a court is an  inconvenient
forum) to the extent that the validity, binding effect or enforceability of
any such  provision is to be  determined by any court other than a court of
the State of New York,  or (II) choice of governing  law to the extent that
the validity,  binding effect or enforceability of any such provision is to
be determined by any court other than a court of the State of New York or a
federal  district  court  sitting  in the State of New York,  in each case,
applying the law and choice of law principles of the State of New York;

               (iii) specifying that provisions  thereof may be waived only
in writing, to the extent that an oral agreement or an implied agreement by
trade  practice or course of conduct has been  created  that  modifies  any
provision of such agreement;

               (iv)  purporting  to give any  person or entity the power to
accelerate obligations without any notice to the obligor; and

               (v) which may be construed to be in the nature of a penalty.

          (C) Our opinion is subject to the following:

               (i) bankruptcy, insolvency,  reorganization,  moratorium and
other laws (or  related  judicial  doctrines)  now or  hereafter  in effect
affecting creditors' rights and remedies generally;

               (ii)  general  principles  of  equity  (including,   without
limitation,   standards  of  materiality,  good  faith,  fair  dealing  and
reasonableness,  equitable  defenses and limits as to the  availability  of
equitable remedies), whether such principles are considered in a proceeding
in equity or at law; and

               (iii)  the   application   of  any   applicable   fraudulent
conveyance,  fraudulent transfer,  fraudulent  obligation,  or preferential
transfer law or any law governing the  distribution of assets of any person
now or  hereafter  in  effect  affecting  creditors'  rights  and  remedies
generally.

          The opinion expressed herein is limited to the laws of the United
States of America  and the laws of the State of New York and, to the extent
relevant,  the General  Corporation  Law of the State of Delaware,  each as
currently  in  effect,   together   with   applicable   provisions  of  the
Constitution of Delaware and relevant decisional law. The opinion expressed
herein is limited to the matters stated  herein,  and no opinion is implied
or may be inferred beyond the matters expressly stated herein.  The opinion
expressed  herein  is  given  as of  the  date  hereof,  and we  assume  no
obligation to supplement  this letter if any  applicable  laws change after
the date  hereof or if we become  aware of any facts that might  change the
opinion expressed herein after the date hereof or for any other reason.

          We hereby  consent to the filing of this opinion as an exhibit to
the  Registration  Statement  and to the  reference  to this Firm under the
caption  "Legal  Matters"  in  the  prospectus  that  is  included  in  the
Registration Statement. 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 Securities Act of 1933, as amended.

          The  opinion  expressed  herein is  solely  for your  benefit  in
connection  with the  transaction  covered in the first  paragraph  of this
letter  and may not be relied on in any  manner or for any  purpose  by any
other  person or entity  and may not be quoted in whole or in part  without
our prior written consent.

                              Very truly yours,

                              FRIED, FRANK, HARRIS, SHRIVER & JACOBSON LLP
                              /S/ FRIED, FRANK, HARRIS, SHRIVER & JACOBSON LLP