August 15, 2008


Oppenheimer Rochester Double Tax-Free Municipals
6803 South Tucson Way
Centennial, Colorado 80112-3924

Dear Ladies and Gentlemen:

We have acted as counsel to Oppenheimer Rochester Double Tax-Free
Municipals, a Massachusetts business trust (the "Fund"), in connection
with the Registration Statement on Form N-1A (the "Registration
Statement") under the Securities Act of 1933, as amended (the "1933
Act"), and the Investment Company Act of 1940, as amended, filed by the
Fund.  As counsel for the Fund, we have examined such statutes,
regulations, corporate records and other documents and reviewed such
questions of law as we deemed necessary or appropriate for the purposes
of this opinion.

As to matters of Massachusetts law contained in this opinion, we have
relied upon the opinion of Kushner Sanders Ravinal LLP, dated the date
hereof.

Based upon the foregoing, and subject to the qualifications,
limitations and assumptions set forth herein, we are of the opinion
that the Class A Shares, Class B Shares and  Class C Shares (as such
terms are used in the Registration Statement) of beneficial interest to
be issued by the Fund as described in the Registration Statement have
been duly authorized for issuance and, when issued and delivered by the
Fund, in exchange for the consideration stated in the Registration
Statement, will be validly issued, fully paid and non-assessable
(except for the potential liability of shareholders described in the
Fund's Statement of Additional Information being part of the
Registration Statement, under the caption "Shareholder and Trustee
Liability" and except as provided in Section 4.3 of the Fund's
Declaration of Trust to the contrary, with respect to sales loads or
charges, redemption fees and other fees and charges not prohibited as
charges to shareholders under applicable law).

We hereby consent to the filing of this opinion as an exhibit to the
Registration Statement and to the reference to us as legal counsel to
the Fund in the Registration Statement.  We do not thereby admit that
we are within the category of persons whose consent is required under
Section 7 of the 1933 Act or the rules and regulations of the
Securities and Exchange Commission thereunder.

                                    Very truly yours,

                                    /s/  Kramer Levin Naftalis &
                                    Frankel LLP