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                           January 19, 2022

       Michael Clifton
       Chief Financial Officer
       Supernova Partners Acquisition Co II, Ltd.
       4301 50th Street NW
       Suite 300 PMB 1044
       Washington, D.C. 20016

                                                        Re: Supernova Partners
Acquisition Co II, Ltd.
                                                            Amendment No. 2 to
Registration Statement on Form S-4
                                                            Filed January 14,
2022
                                                            File No. 333-260692

       Dear Mr. Clifton:

             We have reviewed your amended registration statement and have the
following
       comments. In some of our comments, we may ask you to provide us with
information so we
       may better understand your disclosure.

              Please respond to this letter by amending your registration
statement and providing the
       requested information. If you do not believe our comments apply to your
facts and
       circumstances or do not believe an amendment is appropriate, please tell
us why in your
       response.

              After reviewing any amendment to your registration statement and
the information you
       provide in response to these comments, we may have additional comments.

       Amendment No. 2 to Registration Statement on Form S-4

       Background of the Transactions, page 143

   1.                                                   The statement on page
152 that the parties amended the Merger Agreement "to permit the
                                                        shares of New Rigetti
Common Stock to trade on the NYSE" appears to conflict with your
                                                        other disclosure that
you intend to seek a listing of New Rigetti shares on the Nasdaq.
                                                        Please revise or
advise.
 Michael Clifton
FirstName
Supernova LastNameMichael     Clifton
           Partners Acquisition Co II, Ltd.
Comapany
January 19,NameSupernova
            2022            Partners Acquisition Co II, Ltd.
January
Page 2 19, 2022 Page 2
FirstName LastName
General

2.       We note the slides in Rigetti's investor presentation dated January
10, 2022 titled
         "positioned for explosive revenue growth" and "rapidly increasing
revenue per customer
         and system." These assertions and the use of prospective financial
information in investor
         presentations appear to contradict statements in the registration
statement indicating that
         Rigetti does not as a matter of course make public projections and
that the prospective
         financial information is disclosed because Rigetti prepared such
information for the
         consideration of Supernova's Board and financial advisors. With a view
toward revised
         disclosure, please tell us if the prospective financial information
was prepared in part for
         marketing purposes or to influence investor decisions. In this
respect, we note additional
         assertions in the investor presentation such as "highly attractive
opportunity to invest at
         the inflection point" and "1,152M post-money enterprise value based on
1.9x 2026E
         revenue of 594M."
       You may contact Ryan Rohn, Senior Staff Accountant, at (202) 551-3739 or
Stephen
Krikorian, Accounting Branch Chief, at (202) 551-3488 if you have questions
regarding
comments on the financial statements and related matters. Please contact
Priscilla Dao, Staff
Attorney, at (202) 551-5997 or Joshua Shainess, Legal Branch Chief, at (202)
551-7951 with any
other questions.



                                                               Sincerely,

                                                               Division of
Corporation Finance
                                                               Office of
Technology
cc:      Om K. Pandya