SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D. C. 20549



                                    FORM 11-K


          [X]  ANNUAL  REPORT  PURSUANT  TO  SECTION  15(d)  OF  THE  SECURITIES
               EXCHANGE ACT OF 1934

For fiscal year ended December 31, 2005

          [ ]  TRANSITION  REPORT  PURSUANT TO SECTION  15(d) OF THE  SECURITIES
               EXCHANGE ACT OF 1934

For the transition period from ________ to _________


Commission File number 1-3247

          A.   Full title of the plan and the address of the plan,  if different
               from that of the issuer named below:


                            THE CORNING INCORPORATED
                     INVESTMENT PLAN FOR UNIONIZED EMPLOYEES

          B.   Name of issuer of the  securities  held  pursuant to the plan and
               the address of its principal executive office:

                              CORNING INCORPORATED
                              ONE RIVERFRONT PLAZA
                                CORNING, NY 14831











Documents filed as part of this report:

          (a)  Index to financial statements filed as part of this report:

               The Statement of Net Assets Available for Benefits as at December
               31,  2005 and  2004,  the  Statement  of  Changes  in Net  Assets
               Available  for Benefits for the year ended  December 31, 2005 and
               supplementary  information,  together with the report  thereon of
               the Independent  Registered Public Accounting Firm dated June 26,
               2006. The required  financial  statement  schedules,  if any, are
               included in the supplementary  information  referred to above and
               should  be  read  in   conjunction   with  the  above   financial
               statements.

          (b)  Exhibit:

               Exhibit 23 - The consent of Insero & Company CPAs, P.C.













                                   SIGNATURES

Pursuant  to the  requirements  of the  Securities  Exchange  Act of  1934,  the
Benefits  Committee  has duly  caused  this  annual  report  to be signed by the
undersigned thereunto duly authorized.

                                          THE CORNING INCORPORATED
                                          INVESTMENT PLAN FOR
                                          UNIONIZED EMPLOYEES


                                          By: /s/ Deborah G. Lauper
                                              -------------------------------
                                              Deborah G. Lauper
                                              Chair
                                              Benefits Committee

Date:  June 27, 2006















Corning Incorporated
Investment Plan for
Unionized Employees
Financial Statements and Supplemental Schedule
December 31, 2005 and 2004






Corning Incorporated Investment
Plan for Unionized Employees
Index
December 31, 2005 and 2004
--------------------------------------------------------------------------------


                                                                         Page(s)

Report of Independent Registered Public Accounting Firm......................6

Financial Statements

Statements of Net Assets Available for Benefits..............................7

Statement of Changes in Net Assets Available for Benefits....................8

Notes to Financial Statements.............................................9-13

Supplemental Schedule*

Schedule of Assets (Held at End of Year)....................................14



*    Other  schedules  required  by Section  2520.103-10  of the  United  States
     Department of Labor's Rules and  Regulations  for Reporting and  Disclosure
     under the Employee  Retirement  Income  Security Act of 1974 ("ERISA") have
     been omitted because they are not applicable.







             REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
             -------------------------------------------------------


To the Corning Incorporated Benefits Plan Committee and the
Participants of the Corning Incorporated Investment Plan for Unionized Employees

We have audited the accompanying statements of net assets available for benefits
of Corning Incorporated  Investment Plan for Unionized Employees (the "Plan") as
of December  31,  2005 and 2004,  and the  related  statement  of changes in net
assets  available  for  benefits for the year ended  December  31,  2005.  These
financial  statements  are the  responsibility  of the  Plan's  management.  Our
responsibility  is to express an opinion on these financial  statements based on
our audits.

We conducted our audits in accordance with the auditing  standards of the Public
Company Accounting Oversight Board (United States). Those standards require that
we plan and perform the audit to obtain  reasonable  assurance about whether the
financial  statements  are free of  material  misstatement.  An  audit  includes
examining,  on a test basis,  evidence supporting the amounts and disclosures in
the  financial  statements.  An audit also  includes  assessing  the  accounting
principles  used  and  significant  estimates  made  by  management,  as well as
evaluating the overall  financial  statement  presentation.  We believe that our
audits provide a reasonable basis for our opinion.

In our opinion,  the financial  statements  referred to above present fairly, in
all  material  respects,  the net  assets  available  for  benefits  of  Corning
Incorporated Investment Plan for Unionized Employees as of December 31, 2005 and
2004,  and the changes in net assets  available  for benefits for the year ended
December  31,  2005,  in  conformity  with U.S.  generally  accepted  accounting
principles.

Our  audits  were  made for the  purpose  of  forming  an  opinion  on the basic
financial statements taken as a whole. The supplemental schedule of assets (held
at end of year) as of  December  31,  2005,  is  presented  for the  purpose  of
additional  analysis  and  is  not  a  required  part  of  the  basic  financial
statements,  but is  supplementary  information  required  by the United  States
Department of Labor's Rules and Regulations  for Reporting and Disclosure  under
the Employee Retirement Income Security Act of 1974. This supplemental  schedule
is the  responsibility of the Plan's management.  The supplemental  schedule has
been  subjected  to the auditing  procedures  applied in the audits of the basic
financial  statements  and, in our  opinion,  is fairly  stated in all  material
respects in relation to the basic financial statements taken as a whole.

Respectfully Submitted,



Insero & Company CPAs, P.C.
Certified Public Accountants

Rochester, New York
June 26, 2006







Corning Incorporated Investment
Plan for Unionized Employees
Statements of Net Assets Available for Benefits
December 31, 2005 and 2004
--------------------------------------------------------------------------------


(in thousands of dollars)
                                                    2005                 2004
                                                    ----                 ----
Assets
Interest in Corning Incorporated
    Master Investment Trust                     $    330,095       $    253,784
Loans to participants                                  7,576              6,647
Participant Contributions Receivable                     164                165
Employer Contributions Receivable                         83                 83
                                                ------------       ------------
     Net assets available for benefits          $    337,918       $    260,679
                                                ============       ============


































   The accompanying notes are an integral part of these financial statements.





Corning Incorporated Investment
Plan for Unionized Employees
Statements of Changes in Net Assets Available for Benefits
Year Ended December 31, 2005
--------------------------------------------------------------------------------

(in thousands of dollars)

Additions to net assets attributed to:
Investment income
    Interest in the Corning Incorporated Master
      Investment Trust, investment income                         $      91,533
    Interest from participant loans                                         375
                                                                  -------------
                                                                         91,908
                                                                  -------------
Contributions
    Employer, net of forfeitures                                          4,518
    Participant                                                           9,300
                                                                  -------------
                                                                         13,818
                                                                  -------------
         Total additions                                                105,726
                                                                  -------------
Deductions from net assets attributed to:
Benefits paid directly to participants                                   28,303
Administrative expenses                                                     184
                                                                  -------------
         Total deductions                                                28,487
                                                                  -------------
         Net increase                                                    77,239
Net assets available for benefits
Beginning of year                                                       260,679
                                                                  -------------
End of year                                                       $     337,918
                                                                  =============





















   The accompanying notes are an integral part of these financial statements.





Corning Incorporated Investment
Plan for Unionized Employees
Notes to Financial Statements
December 31, 2005 and 2004
--------------------------------------------------------------------------------

1.   Description of Plan

     General
     The following brief description of the Corning Incorporated Investment Plan
     for Unionized  Employees  (the "Plan") is provided for general  information
     purposes only.  Participants  should refer to the Plan document and summary
     plan description for a more complete description of the Plan's provisions.

     The Plan is a  defined  contribution  profit-sharing  plan  established  in
     January 1984 and is subject to the  provisions  of the Employee  Retirement
     Income Security Act of 1974 ("ERISA"), as amended.

     Administration
     The Plan is administered  by the Corning  Incorporated  Benefits  Committee
     (the "Committee"),  which is appointed by the Board of Directors of Corning
     Incorporated  (the  "Company").  The  Committee  administers  the  Plan  in
     accordance  with its terms and  applicable  laws and has all  necessary and
     appropriate powers to carry out the provisions of the Plan.

     Trustee and Recordkeeper
     The Plan's  assets are held by  JPMorgan  Chase  Bank (the  "Trustee"),  as
     trustee. The recordkeeper is Affiliated Computer Services, Inc.

     Eligibility
     The Plan covers all union  represented  employees of  participating  unions
     which contract with the Company.  An employee is eligible for participation
     in the Plan upon reaching the age of 18 and completing one year of eligible
     service. Notwithstanding the foregoing, an employee who has attained age 18
     and is  scheduled  on a normal basis to work at least 16 hours a week shall
     be immediately  eligible.  As of December 31, 2005, the union  employees at
     the following locations participated in the Plan:

     Blacksburg, Virginia                          Erwin, New York

     Canton, New York                              Harrodsburg, Kentucky

     Corning Valley, New York                      Oneonta, New York

     Danville, Virginia                            Wilmington, North Carolina

     Participant Accounts
     Each participant's account is credited with the participant's  contribution
     and  allocations of (a) the Company's  contribution  and (b) Plan earnings,
     and charged for administrative expenses.  Trustee and investment management
     fees are deducted from the earnings credited to participants'  accounts.  A
     flat  monthly  fee is charged to each  participant's  account to  subsidize
     administrative  expenses  of  the  Plan  and  is  determined  by  the  plan
     administrator.   Investment   management   fees  are  pro-rated  among  the
     investment  funds as of the last business day of each month. The benefit to
     which a  participant  is entitled is the benefit that can be provided  from
     the participant's vested balance.





Corning Incorporated Investment
Plan for Unionized Employees
Notes to Financial Statements
December 31, 2005 and 2004
--------------------------------------------------------------------------------

     Vesting
     Participants  are vested  immediately  in their  contributions  plus actual
     earnings thereon.  Company contributions to the Plan are fully vested after
     three years of service. All Company  contributions become fully vested upon
     total and permanent disability, death or retirement.

     Contributions - Employer
     The Company makes matching contributions as a percentage of a participant's
     first 5% of eligible  pay  contributed  according to years of service as of
     December 31 of the prior year as follows:

     Less than 19 years of service                                    50%

     19 but less than 24 years of service                             75%

     24 or more years of service                                     100%

     With  respect  to all  employees  eligible  to  participate  in  the  Plan,
     beginning in January of the year the  participant  is expected to reach ten
     years of vested  service and  irrespective  of whether  such  employee  has
     elected  to  contribute  to the Plan,  the  Company  contributes  weekly or
     monthly (based on employee's pay frequency) a supplemental  contribution to
     the Corning Common Stock Fund equal to 1.175% of such  employee's  eligible
     compensation.

     All Company  contributions  are invested in the Corning  Common Stock Fund.
     Participants may transfer  Company  contributions  and associated  earnings
     into  any  other  plan  fund.   Effective  January  1,  2006,  all  Company
     contributions will be allocated based on the participants' elections.

     Forfeiture balances of terminated participants' nonvested accounts are used
     to reduce future employer contributions to the plan.

     Contributions - Participants
     Generally,  participants  may  contribute  up  to  75%  of  their  eligible
     compensation  to the Plan on a  before-tax  basis,  after-tax  basis or any
     combination of the two.

     The maximum amount a participant can contribute to the Plan on a before-tax
     basis is $14,000 per year in 2005 as adjusted by the Internal  Revenue Code
     ("IRC").  The Plan  permits  employees  who have  attained  age 50 or older
     during a given year to contribute  additional  before-tax amounts up to the
     prescribed IRC limitation for "catch-up contributions."

     Participants  may also elect to have their  contributions  invested  in the
     Corning  Common  Stock Fund on a before or after-tax  basis.  Contributions
     into the Corning  Common  Stock Fund are limited to 20% of a  participant's
     annual contributions.






Corning Incorporated Investment
Plan for Unionized Employees
Notes to Financial Statements
December 31, 2005 and 2004
--------------------------------------------------------------------------------

     Fund Transfers
     Participants  are  allowed  to  transfer  their  accumulated  contributions
     between  funds.  Effective  January  1, 2005 the Plan was  amended to limit
     employees' elections to invest future contributions into the Corning Common
     Stock Fund.

     Payment of Benefits
     Benefit payments are made upon retirement  (i.e., at least age 55 with five
     years of service),  or in the event of a participant's  total and permanent
     disability, death or other termination of employment. A retired participant
     can  elect  to  receive  distributions  in a  lump  sum,  installments,  or
     intermittent  withdrawals.  The  Plan  also  provides  for  withdrawals  by
     participants prior to termination.

     Effective March 28, 2005, the mandatory lump-sum distribution threshold was
     lowered to $1,000  from $5,000 to comply  with the  restrictions  set forth
     under  The  Economic  Growth  and  Tax  Relief  Reconciliation  Act of 2001
     ("EGTRRA").

     Participant Loans
     Participants  are eligible to obtain loans from the Plan. Loans are limited
     to one loan per participant  with a repayment term not to exceed 4.5 years,
     except  for  primary  residence  loans in which the term may not exceed ten
     years.  The  maximum  amount of any loan is the lesser of  one-half  of the
     vested  account  balance or $50,000 (with a $1,000  minimum).  The interest
     rate on a loan is established by the Committee.  Participants are charged a
     fee on all loans, which reduces the loan proceeds.

2.   Summary of Significant Accounting Policies

     Basis of Presentation
     The accompanying  financial statements are prepared on the accrual basis of
     accounting.

     Use of Estimates
     The  preparation  of financial  statements  in conformity  with  accounting
     principles  generally  accepted  in the United  States of America  requires
     management  to make  estimates  and  assumptions  that affect the  reported
     amounts of net assets  available for benefits and changes  therein.  Due to
     the  inherent  uncertainty  involved in making  estimates,  actual  results
     reported in future periods could differ from those estimates.

     Basis of Allocation from the Corning Incorporated Master Investment Trust
     The  Plan  has a  specific  interest  in the  Corning  Incorporated  Master
     Investment  Trust (the "Master  Trust") in which another plan  sponsored by
     the Company also  participates.  The Plan's specific interest in the Master
     Trust is  credited  or charged  for  contributions,  transfers  and benefit
     payments  relating  to its  participants.  Realized  gains and  losses  and
     changes in net unrealized  appreciation  or  depreciation  on  investments,
     income from investments and expenses are allocated to the Plan based on the
     Plan's specific interest in the net assets of the Master Trust. At December
     31, 2005 and 2004, the Plan's percentage  interest in the net assets of the
     Master Trust was approximately 17% and 16%, respectively.





Corning Incorporated Investment
Plan for Unionized Employees
Notes to Financial Statements
December 31, 2005 and 2004
--------------------------------------------------------------------------------

     Valuation of Master Trust Investments (in thousands)
     Master Trust  investments in mutual and collective trust funds are recorded
     at fair value based upon the net asset value  announced  by the fund on the
     last  business day of the year.  Current value of common stock are based on
     active market quotations.  Short-term investment funds are recorded at cost
     which  approximates fair market value due to short  maturities.  Investment
     contracts are valued at contract  value,  representing  contributions  made
     plus interest at the contract rate, less funds withdrawn and administrative
     expenses.  There are no reserves against contract values for credit risk of
     the  contract  issuers  or  otherwise.   Investment   contracts  are  fully
     benefit-responsive.  The  Company  does not expect any  employer  initiated
     events that may cause premature  liquidation of a contract at market value.
     At December  31,  2005 and 2004,  investment  contracts  held by the Master
     Trust were $452,411,  and $422,902,  respectively,  at contract value.  The
     contract  values  approximate  fair value.  The average yield and crediting
     interest rate was approximately 5% and 6% for 2005 and 2004,  respectively.
     The crediting  interest  rates are based on a formula  agreed upon with the
     issuers.

     Interest  is accrued  by the Master  Trust as  earned,  and  dividends  are
     recorded on the ex-dividend date.

     Purchases  and sales of  securities  are  recorded by the Master Trust on a
     trade-date basis.  Realized gains and losses for security  transactions are
     reported  using the  average  cost  method.  Unrealized  gains  and  losses
     represent the difference between the cost and fair value of securities.

     Valuation of Participant Loans
     Participant loans are valued at cost which approximates fair value.

     Payment of Benefits
     Benefits are recorded when paid.

     Risks and Uncertainties
     The Plan's  investment  securities  are exposed to various  risks,  such as
     changes  in  interest  rates and market  returns.  Due to the level of risk
     associated with certain investments and the level of uncertainty related to
     changes  in the  value of  these  investments,  it is at  least  reasonably
     possible  that  changes in  valuations  in the near term  would  materially
     affect  participants'  account balances and the amounts of such investments
     reported in the Plan's financial statements.

3.   Investments (in thousands)

     The following presents the Master Trust's investments at December 31:

                                                  2005                 2004
                                                  ----                 ----

     Fixed Income Funds                       $     452,411      $     422,902
     Mutual Funds                                   706,594            601,636
     Collective Trust Fund                           49,473             50,130
     Short-Term Investment Funds                      7,557              5,990
     Corning Common Stock                           723,908            497,250
                                              -------------      -------------
                                              $   1,939,943      $   1,577,908
                                              =============      =============





Corning Incorporated Investment
Plan for Unionized Employees
Notes to Financial Statements
December 31, 2005 and 2004
--------------------------------------------------------------------------------

     Investments  that represent 5% or more of net assets available for benefits
     as of  December  31,  2005 and 2004 were the Plan's  interest in the Master
     Trust.

     During 2005, the Master Trust's investments  (including gains and losses on
     investments  bought and sold, as well as held during the year)  appreciated
     in value, as follows:

     Mutual Funds                                              $      33,408
     Corning Common Stock                                            314,228
                                                               -------------
                                                               $     347,636
                                                               =============

     During 2005, the Master Trust's  investments  earned interest and dividends
     in the amount of $44,687. For 2005, investment expenses totaled $1,083.

4.   Plan Termination

     Although  it has not  expressed  any intent to do so, the  Company  has the
     right to terminate  the Plan  subject to the  provisions  of ERISA.  In the
     event of Plan termination,  all amounts credited to participants'  accounts
     will  become  100%  vested  and  will be  distributed  to  participants  in
     accordance with Plan provisions.

5.   Tax Status

     The Plan received a favorable  determination  letter dated November 5, 2003
     from the Internal Revenue Service indicating that it meets the requirements
     of  Section  401(a) and  501(a) of the IRC and has  qualified  status as an
     employee  retirement  plan.  The Plan has been amended since  receiving the
     determination  letter.  However,  the  plan  administrator  and the  Plan's
     benefits  counsel  believe that the Plan is designed and is currently being
     operated in compliance with the applicable provisions of the IRC.

6.   Reconciliation of Financial Statements to Form 5500 (in thousands)

     The following is a reconciliation  of net assets available for benefits per
     the financial statements at December 31, 2005 to Form 5500:

         Net assets available for benefits per the financial
           statements                                            $     337,918
         Amounts allocated to withdrawing participants                    (889)
                                                                 -------------

         Net assets available for benefits per the Form 5500     $     337,029
                                                                 =============

     The following is a reconciliation  of benefits paid to participants per the
     financial statements for the year ended December 31, 2005 to Form 5500:

         Benefits paid to participants per the financial
           statements                                            $      28,303
         Add:  Amounts allocated to withdrawing participants
           at December 31, 2005                                            889
                                                                 -------------

         Benefits paid to participants per Form 5500             $      29,192
                                                                 =============





Corning Incorporated Investment
Plan for Unionized Employees
Schedule of Assets (Held at End of Year)
December 31, 2005
--------------------------------------------------------------------------------

(in thousands of dollars)


Identity of Issuer,         Description of Investment Including
Borrower, Lessor or          Maturity Date, Rate of Interest,           Current
   Similar Party            Collateral, Par, or Maturity Value           Value
-------------------      ----------------------------------------      --------

 Participant loans       Maturity dates through 2015 and interest      $  7,576
                             rates ranging from 4.75% - 10.50%











                                                                      Exhibit 23


            CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
            --------------------------------------------------------


We consent to the  incorporation by reference in the  Registration  Statement of
Corning  Incorporated  on Form  S-8 (No.  333-82926  and No.  333-26049)  of our
report,  dated June 26, 2006,  relating to the  financial  statements of Corning
Incorporated  Investment  Plan for  Unionized  Employees,  which appears in this
Annual Report on Form 11-K.

Respectfully Submitted,



Insero & Company CPAs, P.C.
Certified Public Accountants

Rochester, New York
June 27, 2006