EXHIBIT 5-B

                      [Letterhead of Weil, Gotshal & Manges LLP]


                                   October 15, 1998


MediaOne Group, Inc.
188 Inverness Drive West
Englewood, Colorado  80112

Ladies and Gentlemen:

          We have acted as counsel to MediaOne Group, Inc., a Delaware 
corporation ("MediaOne Group"), MediaOne Group Funding, Inc., a Delaware 
corporation ("MediaOne Group Funding"), and MediaOne Finance Trust III, 
MediaOne Finance Trust IV, MediaOne Finance Trust V and MediaOne Finance 
Trust VI, each a Delaware business trust (the "Trusts"), in connection with 
the preparation of the registration statement of MediaOne Group, MediaOne 
Group Funding and the Trusts on Form S-3 (Registration No. 333-65371), filed 
with the Securities and Exchange Commission (the "Commission") on October 6, 
1998 and amended by Amendment No. 1 filed with the Commission on October 15, 
1998 (as amended, the "Registration Statement"), relating to the registration 
under the Securities Act of 1933, as amended (the "Securities Act"), of 
preferred securities of the Trusts (the "Preferred Securities") and 
subordinated debt securities of MediaOne Group Funding (the "Subordinated 
Notes").  The Subordinated Notes will be fully and unconditionally guaranteed 
by MediaOne Group (the "Note Guarantees").  The Subordinated Notes and the 
Note Guarantees will be issued in accordance with the provisions of an 
indenture (the "Indenture") dated June 12, 1998, among MediaOne Group, 
MediaOne Group Funding and Norwest Bank Minnesota, National Association, as 
trustee (the "Trustee"), which is filed as an exhibit to the Registration 
Statement.  The Indenture will be supplemented for each series of 
Subordinated Notes (each a "Supplemental Indenture"), the form of which is 
being filed as an exhibit to the Registration Statement.  The Preferred 
Securities will be guaranteed by MediaOne Group in the manner and to the 
extent set forth in the guarantee agreements (the "Preferred Securities 
Guarantees"), the form of which is filed as an exhibit to the Registration 
Statement.

          In so acting, we have reviewed the Registration Statement, including
the prospectus (the "Prospectus") contained 



MediaOne Group, Inc.
October 15, 1998
Page 2

therein, the Indenture the forms of Supplemental Indenture, Subordinated 
Note, Note Guarantee and Preferred Securities Guarantee.  In addition, we 
have examined originals or copies, certified or otherwise identified to our 
satisfaction, of such corporate records, agreements, documents and other 
instruments, and such certificates or comparable documents of public 
officials and of officers and representatives of MediaOne Group and MediaOne 
Group Funding, and have made such inquiries of such officers and 
representatives, as we have deemed relevant and necessary as a basis for the 
opinions hereinafter set forth.  In such examination, we have assumed the 
genuineness of all signatures, the legal capacity of natural persons, the 
authenticity of all documents submitted to us as originals, the conformity to 
original documents of all documents submitted to us as certified or 
photostatic copies and the authenticity of the originals of such latter 
documents.  As to all questions of fact material to this opinion that have 
not been independently established, we have relied upon certificates or 
comparable documents of officers and representatives of MediaOne Group and 
MediaOne Group Funding.  Based on the foregoing, and subject to the 
qualifications stated herein, we are of the opinion that:

          1.   The Subordinated Notes have been duly and validly authorized 
by MediaOne Group Funding and, when executed, authenticated, issued and 
delivered in the manner contemplated in the Indenture and the applicable 
Supplemental Indenture, will constitute the legal, valid and binding 
obligations of MediaOne Group Funding, entitled to the benefits of the 
Indenture and the applicable Supplemental Indenture and enforceable against 
it in accordance with their terms, subject to applicable bankruptcy, 
insolvency, fraudulent conveyance, reorganization, moratorium and similar 
laws affecting creditors' rights and remedies generally and subject, as to 
enforceability, to general principles of equity, including principles of 
commercial reasonableness, good faith and fair dealing (regardless of whether 
enforcement is sought in a proceeding at law or in equity) and subject to the 
qualification that (i) the waiver of rights under any usury laws contained in 
the Indenture may be unenforceable and (ii) we express no opinion as to the 
effect on the Subordinated Notes of the laws of any jurisdiction other than 
the State of New York and the federal laws of the United States, including 
laws which limit the rates of interest legally chargeable or collectible.  

          2.   The Note Guarantees have been duly and validly authorized by
MediaOne Group and, when executed, authenticated, issued and delivered in the
manner contemplated in the Indenture and the applicable Supplemental Indenture,
will constitute the 



MediaOne Group, Inc.
October 15, 1998
Page 3

legal, valid and binding obligations of MediaOne Group, entitled to the 
benefits of the Indenture and the applicable Supplemental Indenture and 
enforceable against it in accordance with their terms, subject to applicable 
bankruptcy, insolvency, fraudulent conveyance, reorganization, moratorium and 
similar laws affecting creditors' rights and remedies generally and subject, 
as to enforceability, to general principles of equity, including principles 
of commercial reasonableness, good faith and fair dealing (regardless of 
whether enforcement is sought in a proceeding at law or in equity) and 
subject to the qualification that (i) the waiver of rights under any usury 
laws contained in the Indenture may be unenforceable and (ii) we express no 
opinion as to the effect on the Note Guarantees of the laws of any 
jurisdiction other than the State of New York and the federal laws of the 
United States, including laws which limit the rates of interest legally 
chargeable or collectible.  

          3.   The Preferred Securities Guarantees have been duly and validly 
authorized by MediaOne Group and, when executed and delivered by MediaOne 
Group, will constitute the legal, valid and binding obligation of MediaOne 
Group, enforceable against it in accordance with its terms, subject to 
applicable bankruptcy, insolvency, fraudulent conveyance, reorganization, 
moratorium and similar laws affecting creditors' rights and remedies 
generally and subject, as to enforceability, to general principles of equity, 
including principles of commercial reasonableness, good faith and fair 
dealing (regardless of whether enforcement is sought in a proceeding at law 
or in equity).

          The opinions expressed herein are limited to the laws of the State 
of New York, the corporate laws of the State of Delaware and the federal laws 
of the United States, and we express no opinion as to the effect on the 
matters covered by this letter of the laws of any other jurisdiction.  

          We understand that you have received an opinion from Morris, 
Nichols, Arsht & Tunnell, special Delaware counsel for MediaOne Group, 
MediaOne Group Funding and the Trusts.  We are expressing no opinion with 
respect to the matters contained in such opinion.

          We hereby consent to the filing of this opinion as an exhibit to 
the Registration Statement and to the references to this firm under the 
heading "Legal Opinions" in the Prospectus. 

                              Very truly yours,

                              Weil, Gotshal & Manges LLP

                              /s/ Weil, Gotshal & Manges LLP