EXHIBIT C

                              LETTER OF TRANSMITTAL

                             Regarding Interests in

                HATTERAS MULTI-STRATEGY INSTITUTIONAL FUND, L.P.

                   Tendered Pursuant to the Offer to Purchase
                            Dated September 28, 2007

                       THIS LETTER OF TRANSMITTAL MUST BE
                       RECEIVED BY UMB FUND SERVICES, INC.
                              BY OCTOBER 26, 2007.

                   THE OFFER AND WITHDRAWAL RIGHTS WILL EXPIRE
         AT 12:00 MIDNIGHT, EASTERN STANDARD TIME, ON OCTOBER 26, 2007,
                          UNLESS THE OFFER IS EXTENDED.

               Complete This Letter Of Transmittal And Return To:

                Hatteras Multi-Strategy Institutional Fund, L.P.
                           c/o UMB Fund Services, Inc.
                                  P.O. Box 2175
                            Milwaukee, WI 53201-2175

                      Attention: Tender Offer Administrator
                              Phone: (800) 504-9070
                               Fax: (414) 270-1068



Ladies and Gentlemen:

     The undersigned hereby tenders to Hatteras Multi-Strategy Institutional
Fund, L.P., a closed-end, non-diversified, management investment company
organized as a limited partnership under the laws of the State of Delaware (the
"Fund"), the limited partnership interest in the Fund or portion thereof (the
"Interest") held by the undersigned, described and specified below, on the terms
and conditions set out in the Offer to Purchase, dated September 28, 2007 (the
"Offer"), receipt of which is hereby acknowledged, and in this Letter of
Transmittal. THE OFFER AND THIS LETTER OF TRANSMITTAL ARE SUBJECT TO ALL THE
TERMS AND CONDITIONS SET OUT IN THE OFFER, INCLUDING, BUT NOT LIMITED TO, THE
ABSOLUTE RIGHT OF THE FUND TO REJECT ANY AND ALL TENDERS DETERMINED BY IT, IN
ITS SOLE DISCRETION, NOT TO BE IN THE APPROPRIATE FORM.

     The undersigned hereby sells to the Fund the Interest tendered pursuant to
this Letter of Transmittal. The undersigned warrants that it has full authority
to sell the Interest tendered hereby and that the Fund will acquire good title
to the Interest, free and clear of all liens, charges, encumbrances, conditional
sales agreements or other obligations relating to this sale, and not subject to
any adverse claim, when and to the extent the Interest is purchased by the Fund.
Upon request, the undersigned will execute and deliver any additional documents
necessary to complete the sale in accordance with the terms of the Offer.

     The undersigned recognizes that under certain circumstances set out in the
Offer, the Fund may not be required to purchase the Interest tendered hereby.

     A promissory note (the "Note") for the value of the purchased Interest will
be held by UMB Fund Services, Inc. ("UMBFS") on behalf of the undersigned. Upon
written request by the undersigned to UMBFS, UMBFS will mail the Note to the
undersigned at the address of the undersigned as maintained in the books and
records of the Fund. The initial payment of the purchase amount for the Interest
tendered by the undersigned will be made by wire transfer of the funds to an
account designated by the undersigned in this Letter of Transmittal.

     The Note will also reflect the "Post-Audit Payment" portion of the purchase
amount, if any, as described in Section 7 of the Offer. Any Post-Audit Payment
of cash due pursuant to the Note will also be made by wire transfer of the funds
to the undersigned's account as provided herein. The undersigned recognizes that
the amount of the initial payment of the purchase amount for Interests will be
based on the unaudited net asset value of the Fund as of December 31, 2007,
subject to an extension of the Offer as described in Section 8 of the Offer. The
Post-Audit Payment will be payable promptly after the completion of the Fund's
next annual audit. It is anticipated that the annual audit of the Fund's
financial statements will be completed no later than 60 days after the fiscal
year-end of the Fund.

     All authority conferred or agreed to be conferred in this Letter of
Transmittal will survive the death or incapacity of the undersigned and the
obligation of the undersigned hereunder will be binding on the heirs, personal
representatives, successors and assigns of the undersigned. Except as stated in
Section 6 of the Offer, this tender is irrevocable.

     PLEASE FAX OR MAIL (VIA CERTIFIED MAIL, RETURN RECEIPT REQUESTED) TO:
HATTERAS MULTI-STRATEGY INSTITUTIONAL FUND, L.P., C/O UMB FUND SERVICES, INC.,
P.O. BOX 2175, MILWAUKEE, WI 53201-2175, ATTENTION: TENDER OFFER ADMINISTRATOR.
FOR ADDITIONAL INFORMATION: PHONE: (800) 504-9070 OR FAX: (414) 270-1068.


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PART 1.   NAME:

          Name of Partner: ___________________________________

          Telephone Number: __________________________________

PART 2.   AMOUNT OF LIMITED PARTNERSHIP INTEREST BEING TENDERED:

          [ ]  A portion of the undersigned's limited partnership interest
               expressed as a specific dollar value.

          $_______________

          [ ]  The undersigned's entire limited partnership interest.

          The undersigned understands and agrees that if the undersigned tenders
          an amount that would cause the undersigned's capital account balance
          to fall below the required minimum account balance of $1,000,000, the
          General Partner of the Fund may reduce the amount to be repurchased
          from the undersigned so that the required minimum capital account
          balance is maintained or repurchase the remainder of the undersigned's
          Interest in the Fund.

PART 3.   PAYMENT:

          CASH PAYMENT

          Cash payments will be wire transferred to the account you specify
     below:

                        _________________________________
                                  Name of Bank

                        _________________________________
                                 Address of Bank

                        _________________________________
                                   ABA Number

                        _________________________________
                                 Account Number

                        _________________________________
                        Name Under Which Account Is Held

PROMISSORY NOTE

The Note reflecting both the initial payment and the Post-Audit Payment portion
of the purchase amount, as applicable, will be held by UMB Fund Services, Inc.
on the undersigned's behalf. Upon a written request by the undersigned to UMBFS,
UMBFS will mail the Note to the undersigned at the address of the undersigned as
maintained in the books and records of the Fund.


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PART 4.   SIGNATURE(S):

FOR INDIVIDUAL INVESTORS                FOR OTHER INVESTORS:
AND JOINT TENANTS:


- -------------------------------------   ----------------------------------------
Signature                               Print Name of Investor
(SIGNATURE OF OWNER(S) EXACTLY AS
APPEARED ON SUBSCRIPTION AGREEMENT)


- -------------------------------------   ----------------------------------------
Print Name of Investor                  Signature
                                        (SIGNATURE OF OWNER(S) EXACTLY AS
                                        APPEARED ON SUBSCRIPTION AGREEMENT)


- -------------------------------------   ----------------------------------------
Joint Tenant Signature if necessary     Print Name of Signatory and Title
(SIGNATURE OF OWNER(S) EXACTLY AS
APPEARED ON SUBSCRIPTION AGREEMENT)


- -------------------------------------   ----------------------------------------
Print Name of Joint Tenant              Co-signatory if necessary (SIGNATURE OF
                                        OWNER(S) EXACTLY AS APPEARED ON
                                        SUBSCRIPTION AGREEMENT)


                                        ----------------------------------------
                                        Print Name and Title of Co-signatory

Date:
      -------------------------------


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