UNITED STATES
                     SECURITIES AND EXCHANGE COMMISSION
                           Washington, D.C.  20549

                                 FORM 10-K

   [X] ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
       EXCHANGE ACT OF 1934
       For the fiscal year ended December 31, 2012

                                    or

   [ ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
       EXCHANGE ACT OF 1934
       For the transition period to _______________ from _______________


   Commission file number of issuing entity: 333-166711-01

   UBS-Citigroup Commercial Mortgage Trust 2011-C1
   (Exact name of issuing entity as specified in its Charter)

   Citigroup Commercial Mortgage Securities Inc.
   (Exact name of registrant/depositor as specified in its Charter)

   UBS Real Estate Securities Inc.
   Natixis Real Estate Capital LLC
   (Exact name of sponsor as specified in its Charter)


   Delaware                                          86-1073506
   (State or other jurisdiction                      (I.R.S. Employer
   incorporation or organization                     Identification No.
   of registrant)                                    of registrant)


   388 Greenwich Street
   New York, New York                                10013
   (Address of principal executive offices)          (Zip Code)


   registrant's telephone number, including area code: (212) 816-6000

   Securities registered pursuant to Section 12(b) of the Act:

     None.


   Securities registered pursuant to Section 12(g) of the Act:

     None.


   Indicate by check mark if the registrant is a well-known seasoned
   issuer, as defined in Rule 405 of the Securities Act.

     Yes ___  No X


   Indicate by check mark if the registrant is not required to file
   reports pursuant to Section 13 or Section 15(d) of the Act.

     Yes ___  No X


   Indicate by check mark whether the registrant (1) has filed all reports
   required to be filed by Section 13 or 15(d) of the Securities Exchange
   Act of 1934 during the preceding 12 months (or for such shorter period
   that the registrant was required to file such reports), and (2) has been
   subject to such filing requirements for the past 90 days.

     Yes X   No ___


   Indicate by check mark whether the registrant has submitted electronically
   and posted on its corporate Website, if any, every Interactive Data File
   required to be submitted and posted pursuant to Rule 405 of Regulation
   S-T (Section 232.405 of this chapter) during the preceding 12 months (or
   for such shorter period that the registrant was required to submit and
   post such files).

     Not Applicable


   Indicate by check mark if disclosure of delinquent filers pursuant to
   Item 405 of Regulation S-K (Section 229.405 of this chapter) is not
   contained herein, and will not be contained, to the best of
   registrant's knowledge, in definitive proxy or information statements
   incorporated by reference in Part III of this Form 10-K or any amendment
   to this Form 10-K.

     Not applicable.


   Indicate by check mark whether the registrant is a large accelerated
   filer, an accelerated filer, a non-accelerated filer or a smaller
   reporting company.  See definitions of "large accelerated filer,"
   "accelerated filer" and "smaller reporting company" in Rule 12b-2
   of the Exchange Act.  (Check One):

     Large accelerated filer ___
     Accelerated Filer ___
     Non-accelerated Filer X (Do not Check if a smaller reporting company)
     Smaller reporting company ___


   Indicate by check mark whether the registrant is a shell company (as
   defined in Rule 12b-2 of the Act).

     Yes ___  No X


   State the aggregate market value of the voting and non-voting common
   equity held by non-affiliates computed by reference to the price at
   which the common equity was last sold, or the average bid and asked
   price of such common equity, as of the of the last business day of
   the registrant's most recently completed second fiscal quarter.

     Not Applicable.


   Indicate by check mark whether the registrant has filed all documents and
   reports required to be filed by Section 12, 13 or 15(d) of the Securities
   Exchange Act of 1934 subsequent to the distribution of securities under a
   plan confirmed by a court.

     Not Applicable.


   Indicate the number of shares outstanding of each of the registrant's
   classes of common stock, as of the latest practicable date.

     Not Applicable.


   DOCUMENTS INCORPORATED BY REFERENCE

   List hereunder the following documents if incorporated by reference and
   the Part of the Form 10-K (e.g., Part I, Part II, etc.) into which the
   document is incorporated: (1)Any annual report to security holders; (2)
   Any proxy or information statement; and (3)Any prospectus filed pursuant
   to Rule 424(b) or (c) under the Securities Act of 1933. The listed
   documents should be clearly described for identification purposes (e.g.,
   annual report to security holders for fiscal year ended December 24,
   1980).

   See Item 15(a).



                                  PART I

   ITEM 1.    Business.

              Omitted.


   ITEM 1A.   Risk Factors.

              Omitted.


   ITEM 1B.   Unresolved Staff Comments.

              None.


   ITEM 2.    Properties.

              Omitted.


   ITEM 3.    Legal Proceedings.

              Omitted.

   ITEM 4.    Mine Safety Disclosures.

              Omitted.



                                  PART II

   ITEM 5.    Market for Registrant's Common Equity, Related Stockholder
              Matters and Issuer Purchases of Equity Securities.

              Omitted.


   ITEM 6.    Selected Financial Data.

              Omitted.


   ITEM 7.    Management's Discussion and Analysis of Financial Condition and
              Results of Operations.

              Omitted.


   ITEM 7A.   Quantitative and Qualitative Disclosures About Market Risk.

              Omitted.


   ITEM 8.    Financial Statements and Supplementary Data.

              Omitted.


   ITEM 9.    Changes in and Disagreements With Accountants on Accounting and
              Financial Disclosure.

              Omitted.


   ITEM 9A.   Controls and Procedures.

              Omitted.


   ITEM 9B.   Other Information.

              None.



                                    PART III

   ITEM 10.   Directors, Executive Officers and Corporate Governance.

              Omitted.  The issuing entity does not have any executive officers
              or directors.


   ITEM 11.   Executive Compensation.

              Omitted.  The issuing entity does not have any executive officers
              or directors.


   ITEM 12.   Security Ownership of Certain Beneficial Owners and Management
              and Related Stockholder Matters.

              Omitted.  The issuing entity does not have any executive officers
              or directors.


   ITEM 13.   Certain Relationships and Related Transactions, and
              Director Independence.

              Omitted.  The issuing entity does not have any executive officers
              or directors.


   ITEM 14.   Principal Accounting Fees and Services.

                Omitted.


              ADDITIONAL DISCLOSURE ITEMS FOR REGULATION AB

   Item 1112(b) of Regulation AB, Significant Obligor Financial Information.
   With respect to the Trinity Centre Mortgage Loan, based on information
   provided by the Trinity Centre Mortgage Loan Borrower, the net operating
   income for quarter end September 30, 2012 for the Trinity Centre Mortgaged
   Property was $11,342,303.55 and the net operating income for the twelve
   month period ending December 31, 2012 for the Trinity Centre Mortgaged
   Property was $14,152,039.00.


   With respect to the Poughkeepsie Galleria Mortgage Loan, based on
   information provided by the Poughkeepsie Galleria Mortgage Loan Borrower,
   the net operating income for quarter end September 30, 2012 for the
   Poughkeepsie Galleria Mortgaged Property was $11,911,017.00 and the net
   operating income for the twelve month period ending December 31, 2012
   for the Poughkeepsie Galleria Mortgaged Property was $16,126,525.00.


   Item 1114(b)(2) of Regulation AB, Significant Enhancement Provider
   Information.

   None.


   Item 1115(b) of Regulation AB, Certain Derivative Instruments.

   None.


   Item 1117 of Regulation AB, Legal Proceedings.

   The registrant knows of no legal proceedings pending against,
   or proceedings contemplated by government authorities against,
   the sponsor, depositor, trustee, issuing entity, servicer contemplated
   by Item 1108(a)(3) of Regulation AB, originator contemplated by Item
   1110(b) of Regulation AB, or other party contemplated by Item
   1100(d)(1) of Regulation AB, or of which any property of the foregoing
   is the subject, that is material to certificateholders.


   Item 1119 of Regulation AB, Affiliations and Certain Relationships and
   Related Transactions.

   The information regarding this Item has been previously filed in a
   424(b)(5) filing dated December 28, 2011.


   Item 1122 of Regulation AB, Compliance with Applicable Servicing Criteria.

   See Item 15, Exhibits 33 and 34.


   Item 1123 of Regulation AB, Servicer Compliance Statement.

   See Item 15, Exhibit 35.



                                   PART IV

   ITEM 15. Exhibits, Financial Statement Schedules.

   (a) The following is a list of documents filed as a part of this annual
       report on Form 10-K:

       (1) Not Applicable.

       (2) Not Applicable.

       (3) The exhibits required by Item 601 of Regulation S-K and by
           paragraph (b) below.

   Exhibit
   Number   Description

 4.1   Pooling and Servicing Agreement, dated as of December 1, 2011, by and
       among Citigroup Commercial Mortgage Securities, Inc., as depositor,
       Wells Fargo Bank, National Association, as Master Servicer, Midland
       Loan Services, a Division of PNC Bank, National Association, as Special
       Servicer, Trimont Real Estate Advisors, Inc., as Operating Advisor, and
       Deutsche Bank Trust Company Americas, as trustee, certificate
       administrator, paying agent and custodian.  (Exhibit 4.1 was filed as
       part of the Registrant's Current Report on Form 8-K filed on
       December 29, 2011 (Commission File No. 333-166711-01) and is
       incorporated by reference herein.)


 4.2   Amendment Number 1 To Pooling And Servicing Agreement, dated as of
       June 12, 2012, by and among Citigroup Commercial Mortgage Securities
       Inc., as depositor, Wells Fargo Bank, National Association, as master
       servicer, Midland Loan Services, a Division of PNC Bank, National
       Association, as special servicer, Deutsche Bank Trust Company Americas,
       as trustee, certificate administrator, paying agent and custodian, and
       TriMont Real Estate Advisors, Inc., as operating advisor.


   31  Rule 13a-14(d)/15d-14(d) Certification.


   33  Reports on assessment of compliance with servicing criteria for
       asset-backed securities.

       Exhibit 33.1 Wells Fargo Bank, N.A., as master servicer, Annual
       Report on Assessment of Compliance for Year End December 31, 2012.

       Exhibit 33.2 Midland Loan Services, a Division of PNC Bank, N.A.,
       as special servicer and sub-servicer,  Annual Report on Assessment
       of Compliance for Year End December 31, 2012.

       Exhibit 33.3 Deutsche Bank Trust Company Americas, as trustee,
       custodian and certificae administrator, Annual Report on
       Assessment of Compliance for Year End December 31, 2012.

       Exhibit 33.4 Trimont Real Estate Advisors, Inc., as operating
       advisor, Annual Report on Assessment of Compliance for Year
       End December 31, 2012.

       Exhibit 33.5 CoreLogic Commercial Real Estate Services, Inc.,
       as servicing function participant, Annual Report on Assessment
       of Compliance for Year End December 31, 2012.

       Exhibit 33.6 National Tax Search, LLC, as tax service vendor
       for the master servicer, Annual Report on Assessment of
       Compliance for Year End December 31, 2012.

       Exhibit 33.7 KeyCorp Real Estate Capital Markets, Inc., as
       sub-servicer, Annual Report on Assessment of Compliance for
       Year End December 31, 2012.


   34  Attestation reports on assessment of compliance with servicing criteria
       for asset-backed securities.

       Exhibit  34.1 Attestation Report on Assessment of Compliance
       with Servicing Criteria for Wells Fargo Bank, N.A., as master
       servicer, Report (Exhibit 33.1) for Year End December 31, 2012.

       Exhibit  34.2 Attestation Report on Assessment of Compliance
       with Servicing Criteria for Midland Loan Services, a
       Division of PNC Bank, N.A., as special servcier and
       sub-servicer, Report (Exhibit 33.2) for Year End December 31, 2012.

       Exhibit  34.3 Attestation Report on Assessment of Compliance
       with Servicing Criteria for Deutsche Bank Trust Company Americas,
       as trustee, custodian and certificate administrator, Report
       (Exhibit 33.3) for Year End December 31, 2012.

       Exhibit  34.4 Attestation Report on Assessment of Compliance
       with Servicing Criteria for Trimont Real Estate Advisors, Inc.,
       as operating advisor, Report (Exhibit 33.4) for Year End
       December 31, 2012.

       Exhibit  34.5 Attestation Report on Assessment of Compliance with
       Servicing Criteria for CoreLogic Commercial Real Estate Services,
       Inc., as servicing function participant, Report (Exhibit 33.5)
       for Year End December 31, 2012.

       Exhibit  34.6 Attestation Report on Assessment of Compliance with
       Servicing Criteria for National Tax Search, LLC, as tax service
       vendor for the master servicer, Report (Exhibit 33.6) for
       Year End December 31, 2012.

       Exhibit  34.7  Attestation Report on Assessment of Compliance
       with Servicing Criteria for KeyCorp Real Estate Capital Markets,
       Inc., as sub-servicer, Report (Exhibit 33.7) for Year End
       December 31, 2012.


   35  Servicer compliance statement.

       Exhibit  35.1 Wells Fargo Bank, N.A., as master servicer, Annual
       Statement of Compliance for Year End December 31, 2012.

       Exhibit  35.2 Midland Loan Services, a Division of PNC Bank, N.A.,
       as special servicer Annual Statement of Compliance for Year End
       December 31, 2012.

       Exhibit  35.3 Deutsche Bank Trust Company Americas, as certificate
       administrator, Annual Statement of Compliance for Year End
       December 31, 2012.

       Exhibit  35.4  Midland Loan Services, a Division of PNC Bank, N.A.,
       as sub-servicer, Annual Statement of Compliance for Year End
       December 31, 2012.

       Exhibit  35.5  CoreLogic Commercial Real Estate Services, Inc., as
       servicing function participant, Annual Statement of Compliance for Year
       End December 31, 2012.

       Exhibit  35.6 Deutsche Bank Trust Company Americas, as trustee,
       Annual Statement of Compliance for Year End December 31, 2012.

       Exhibit  35.7 Deutsche Bank Trust Company Americas, as custodian,
       Annual Statement of Compliance for Year End December 31, 2012.

       Exhibit  35.8  KeyCorp Real Estate Capital Markets, Inc., as
       sub-servicer, Annual Statement of Compliance for Year End
       December 31, 2012.


   (b) The exhibits required by Item 601 of Regulation S-K are filed as
       noted under subparagraph (a)(3) above.

   (c) Not Applicable.



                                    SIGNATURE

   Pursuant to the requirements of Section 13 or 15(d) of the Securities
   Exchange Act of 1934, the registrant has duly caused this report to be
   signed on its behalf by the undersigned, thereunto duly authorized.


   Citigroup Commercial Mortgage Securities Inc., as Registrant
   (Depositor)


   By: /s/ Paul Vanderslice
       ___________________________
       Paul Vanderslice
       Title: Vice President
       (Senior Officer in Charge of
       Securitization of the Depositor)


   Date: March 29, 2013



   Supplemental Information to be Furnished With Reports Filed Pursuant to
   Section 15(d) of the Act by Registrants Which Have Not Registered Securities
   Pursuant to Section 12 of the Act

   (a)	(1) No annual report is provided to the certificateholders.

        (2) No proxy statement, form of proxy or other proxy soliciting
            material has been sent to any certificateholders with
            respect to any annual or other meeting of certificateholders.



   EXHIBIT INDEX

   Exhibit
   Number   Description

 4.1   Pooling and Servicing Agreement, dated as of December 1, 2011, by and
       among Citigroup Commercial Mortgage Securities, Inc., as depositor,
       Wells Fargo Bank, National Association, as Master Servicer, Midland
       Loan Services, a Division of PNC Bank, National Association, as Special
       Servicer, Trimont Real Estate Advisors, Inc., as Operating Advisor, and
       Deutsche Bank Trust Company Americas, as trustee, certificate
       administrator, paying agent and custodian.  (Exhibit 4.1 was filed as
       part of the Registrant's Current Report on Form 8-K filed on
       December 29, 2011 (Commission File No. 333-166711-01) and is
       incorporated by reference herein.)


 4.2   Amendment Number 1 To Pooling And Servicing Agreement, dated as of
       June 12, 2012, by and among Citigroup Commercial Mortgage Securities
       Inc., as depositor, Wells Fargo Bank, National Association, as master
       servicer, Midland Loan Services, a Division of PNC Bank, National
       Association, as special servicer, Deutsche Bank Trust Company Americas,
       as trustee, certificate administrator, paying agent and custodian, and
       TriMont Real Estate Advisors, Inc., as operating advisor.


   31  Rule 13a-14(d)/15d-14(d) Certification.


   33  Reports on assessment of compliance with servicing criteria for
       asset-backed securities.

       Exhibit 33.1 Wells Fargo Bank, N.A., as master servicer, Annual
       Report on Assessment of Compliance for Year End December 31, 2012.

       Exhibit 33.2 Midland Loan Services, a Division of PNC Bank, N.A.,
       as special servicer and sub-servicer,  Annual Report on Assessment
       of Compliance for Year End December 31, 2012.

       Exhibit 33.3 Deutsche Bank Trust Company Americas, as trustee,
       custodian and certificae administrator, Annual Report on
       Assessment of Compliance for Year End December 31, 2012.

       Exhibit 33.4 Trimont Real Estate Advisors, Inc., as operating
       advisor, Annual Report on Assessment of Compliance for Year
       End December 31, 2012.

       Exhibit 33.5 CoreLogic Commercial Real Estate Services, Inc.,
       as servicing function participant, Annual Report on Assessment
       of Compliance for Year End December 31, 2012.

       Exhibit 33.6 National Tax Search, LLC, as tax service vendor
       for the master servicer, Annual Report on Assessment of
       Compliance for Year End December 31, 2012.

       Exhibit 33.7 KeyCorp Real Estate Capital Markets, Inc., as
       sub-servicer, Annual Report on Assessment of Compliance for
       Year End December 31, 2012.


   34  Attestation reports on assessment of compliance with servicing criteria
       for asset-backed securities.

       Exhibit  34.1 Attestation Report on Assessment of Compliance
       with Servicing Criteria for Wells Fargo Bank, N.A., as master
       servicer, Report (Exhibit 33.1) for Year End December 31, 2012.

       Exhibit  34.2 Attestation Report on Assessment of Compliance
       with Servicing Criteria for Midland Loan Services, a
       Division of PNC Bank, N.A., as special servcier and
       sub-servicer, Report (Exhibit 33.2) for Year End December 31, 2012.

       Exhibit  34.3 Attestation Report on Assessment of Compliance
       with Servicing Criteria for Deutsche Bank Trust Company Americas,
       as trustee, custodian and certificate administrator, Report
       (Exhibit 33.3) for Year End December 31, 2012.

       Exhibit  34.4 Attestation Report on Assessment of Compliance
       with Servicing Criteria for Trimont Real Estate Advisors, Inc.,
       as operating advisor, Report (Exhibit 33.4) for Year End
       December 31, 2012.

       Exhibit  34.5 Attestation Report on Assessment of Compliance with
       Servicing Criteria for CoreLogic Commercial Real Estate Services,
       Inc., as servicing function participant, Report (Exhibit 33.5)
       for Year End December 31, 2012.

       Exhibit  34.6 Attestation Report on Assessment of Compliance with
       Servicing Criteria for National Tax Search, LLC, as tax service
       vendor for the master servicer, Report (Exhibit 33.6) for
       Year End December 31, 2012.

       Exhibit  34.7  Attestation Report on Assessment of Compliance
       with Servicing Criteria for KeyCorp Real Estate Capital Markets,
       Inc., as sub-servicer, Report (Exhibit 33.7) for Year End
       December 31, 2012.


   35  Servicer compliance statement.

       Exhibit  35.1 Wells Fargo Bank, N.A., as master servicer, Annual
       Statement of Compliance for Year End December 31, 2012.

       Exhibit  35.2 Midland Loan Services, a Division of PNC Bank, N.A.,
       as special servicer Annual Statement of Compliance for Year End
       December 31, 2012.

       Exhibit  35.3 Deutsche Bank Trust Company Americas, as certificate
       administrator, Annual Statement of Compliance for Year End
       December 31, 2012.

       Exhibit  35.4  Midland Loan Services, a Division of PNC Bank, N.A.,
       as sub-servicer, Annual Statement of Compliance for Year End
       December 31, 2012.

       Exhibit  35.5  CoreLogic Commercial Real Estate Services, Inc., as
       servicing function participant, Annual Statement of Compliance for Year
       End December 31, 2012.

       Exhibit  35.6 Deutsche Bank Trust Company Americas, as trustee,
       Annual Statement of Compliance for Year End December 31, 2012.

       Exhibit  35.7 Deutsche Bank Trust Company Americas, as custodian,
       Annual Statement of Compliance for Year End December 31, 2012.

       Exhibit  35.8  KeyCorp Real Estate Capital Markets, Inc., as
       sub-servicer, Annual Statement of Compliance for Year End
       December 31, 2012.