SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM 8-K

                                 CURRENT REPORT

     Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934


       Date of Report (Date of earliest event reported): January 21, 2004


                        National Instruments Corporation
             (Exact name of registrant as specified in its charter)


         Delaware                    02-25426                    74-1871327
(State or other jurisdiction       (Commission                  (IRS Employer
     of incorporation)             File Number)              Identification No.)

               11500 North MoPac Expressway, Austin, Texas          78759
                 (Address of principal executive offices)         (Zip Code)

       Registrant's telephone number, including area code: (512) 338-9119


          (Former name or former address, if changed since last report)





Item 5.  Other Events and Regulation FD Disclosure.

     On January 21, 2004,  pursuant to a Preferred  Stock Rights  Agreement (the
"Rights Agreement") between National Instruments Corporation (the "Company") and
EquiServe  Trust  Company,  N.A.  as Rights  Agent  (the  "Rights  Agent"),  the
Company's  Board of  Directors  declared a dividend  of one right (a "Right") to
purchase  one  one-thousandth  share of the  Company's  Series  A  Participating
Preferred  Stock  ("Series A Preferred")  for each  outstanding  share of Common
Stock,  par value  $0.001  per share  ("Common  Shares"),  of the  Company.  The
dividend  is payable on May 10,  2004 (the  "Record  Date") to  stockholders  of
record as of the  close of  business  on that  date.  Each  Right  entitles  the
registered holder to purchase from the Company one  one-thousandth of a share of
Series A Preferred at an exercise price of $200.00 (the "Purchase Price"), after
giving  effect to the  3-for-2  stock  split  (in the form of a stock  dividend)
declared by the  Company's  Board of Directors  on January 21, 2004,  subject to
adjustment.

     The following  summary of the principal terms of the Rights  Agreement is a
general  description only and is subject to the detailed terms and conditions of
the Rights  Agreement.  A copy of the Rights  Agreement  is  attached  hereto as
Exhibit 4.1 and is incorporated herein by reference.

     Rights Evidenced by Common Share Certificates

     The Rights will not be  exercisable  until the  Distribution  Date (defined
below).  Certificates for the Rights ("Rights Certificates") will not be sent to
stockholders  and the Rights  will  attach to and trade only  together  with the
Common Shares. Accordingly,  Common Share certificates outstanding on the Record
Date will evidence the Rights  related  thereto,  and Common Share  certificates
issued  after the Record Date will contain a notation  incorporating  the Rights
Agreement by reference.  Until the Distribution  Date (or earlier  redemption or
expiration  of the Rights),  the surrender or transfer of any  certificates  for
Common  Shares,  outstanding as of the Record Date,  even without  notation or a
copy of the Summary of Rights being attached  thereto,  also will constitute the
transfer of the Rights  associated  with the Common Shares  represented  by such
certificate.

     Distribution Date

     The Rights will be separate  from the Common  Shares,  Rights  Certificates
will be issued and the Rights  will become  exercisable  upon the earlier of (a)
the tenth day (or such later date as may be determined by the Company's Board of
Directors) after a person or group of affiliated or associated  persons (subject
to certain  exclusions  for certain  current  stockholders  of the  Company,  an
"Acquiring Person") has acquired,  or obtained the right to acquire,  beneficial
ownership of 20% or more of the Common Shares then outstanding, or (b) the tenth
business day (or such later date as may be determined by the Company's  Board of
Directors)  after a person or group  announces a tender or exchange  offer,  the
consummation  of which would  result in ownership by a person or group of 20% or
more of the Company's then outstanding  Common Shares. The earlier of such dates
is referred to as the "Distribution Date."

     Issuance of Rights Certificates; Expiration of Rights

     As  soon  as  practicable   following  the  Distribution   Date,  a  Rights
Certificate  will be mailed to holders of record of the Common  Shares as of the
close of business on the Distribution Date and such separate Rights  Certificate
alone will evidence the Rights from and after the Distribution  Date. The Rights
will expire on the earliest of (i) May 10, 2014 (the "Final  Expiration  Date"),
or (ii) redemption or exchange of the Rights as described below.

     Initial Exercise of the Rights

     Following  the  Distribution  Date,  and  until one of the  further  events
described  below,  holders of the  Rights  will be  entitled  to  receive,  upon
exercise and the payment of the Purchase Price, one one-thousandth  share of the
Series A  Preferred.  In the event  that the  Company  does not have  sufficient
Series A  Preferred  available  for all  Rights  to be  exercised,  or the Board
decides  that such action is  necessary  and not  contrary to the  interests  of
Rights  holders,  the  Company  may  instead  substitute  cash,  assets or other
securities  for the  Series A  Preferred  for which the  Rights  would have been
exercisable under this provision or as described below.

     Right to Buy Company Common Shares

     Unless the  Rights are  earlier  redeemed,  in the event that an  Acquiring
Person obtains 20% or more of the Company's then outstanding Common Shares, then
each  holder of a Right which has not  theretofore  been  exercised  (other than
Rights  beneficially  owned by the Acquiring  Person,  which will  thereafter be
void) will  thereafter have the right to receive,  upon exercise,  Common Shares
having a value equal to two times the Purchase Price. Rights are not exercisable
following the  occurrence of an event as described  above until such time as the
Rights are no longer redeemable by the Company as set forth below.

     Right to Buy Acquiring Company Shares

     Similarly, unless the Rights are earlier redeemed, in the event that, after
an Acquiring Person obtains 20% or more of the Company's then outstanding Common
Shares,  (i) the Company is acquired in a merger or other  business  combination
transaction, or (ii) 50% or more of the Company's consolidated assets or earning
power are sold (other than in  transactions in the ordinary course of business),
proper  provision  must be made so that  each  holder  of a Right  which has not
theretofore  been  exercised  (other  than  Rights  beneficially  owned  by  the
Acquiring Person,  which will thereafter be void) will thereafter have the right
to receive,  upon  exercise,  shares of common  stock of the  acquiring  company
having a value equal to two times the Purchase Price.

     Exchange Provision

     At any time after an Acquiring  Person obtains 20% or more of the Company's
then  outstanding  Common Shares and prior to the  acquisition by such Acquiring
Person of 50% or more of the Company's  outstanding  Common Shares, the Board of
Directors of the Company may exchange the Rights (other than Rights owned by the
Acquiring Person), in whole or in part, at an exchange ratio of one Common Share
per Right.

     Redemption

     At any time on or prior to the Close of  Business on the earlier of (i) the
fifth  day  following  the  attainment  of 20% or  more  of the  Company's  then
outstanding  Common Shares by an Acquiring  Person (or such later date as may be
determined by action of the Company's Board of Directors and publicly  announced
by the Company),  or (ii) the Final  Expiration Date, the Company may redeem the
Rights in whole, but not in part, at a price of $0.001 per Right.

     Adjustments to Prevent Dilution

     The Purchase Price payable,  the number of Rights, and the number of Series
A Preferred  or Common  Shares or other  securities  or property  issuable  upon
exercise of the Rights are subject to adjustment from time to time in connection
with the dilutive issuances by the Company as set forth in the Rights Agreement.
With certain  exceptions,  no adjustment in the Purchase  Price will be required
until  cumulative  adjustments  require  an  adjustment  of at  least 1% in such
Purchase Price.

     Cash Paid Instead of Issuing Fractional Shares


     No fractional Common Shares will be issued upon exercise of a Right and, in
lieu  thereof,  an  adjustment in cash will be made based on the market price of
the Common Shares on the last trading date prior to the date of exercise.


     No Stockholders' Rights Prior to Exercise


     Until a Right is  exercised,  the  holder  thereof,  as such,  will have no
rights as a stockholder  of the Company  (other than any rights  resulting  from
such holder's ownership of Common Shares),  including,  without limitation,  the
right to vote or to receive dividends.

     Amendment of Rights Agreement


     The terms of the  Rights  and the  Rights  Agreement  may be amended in any
respect  without  the  consent  of  the  Rights  holders  on  or  prior  to  the
Distribution Date; thereafter,  the terms of the Rights and the Rights Agreement
may be amended  without the  consent of the Rights  holders in order to cure any
ambiguities  or to make changes which do not  adversely  affect the interests of
Rights holders (other than the Acquiring Person).

     Rights and Preferences of the Series A Preferred

     Each one  one-thousandth  of a share of Series A  Preferred  has rights and
preferences substantially equivalent to those of one Common Share.

     No Voting Rights

     Rights will not have any voting rights.

     Certain Anti-Takeover Effects

     The Rights  approved by the Board of Directors  are designed to protect and
maximize  the value of the  outstanding  equity  interests in the Company in the
event of an  unsolicited  attempt by an  acquirer  to take over the Company in a
manner or on terms not  approved by the Board of  Directors.  Takeover  attempts
frequently  include coercive tactics to deprive the Company's Board of Directors
and its  stockholders  of any real  opportunity  to determine the destiny of the
Company.  The  Rights  have been  declared  by the Board in order to deter  such
tactics, including a gradual accumulation of shares in the open market of 20% or
greater  position to be  followed  by a merger or a partial or  two-tier  tender
offer  that does not treat all  stockholders  equally.  These  tactics  unfairly
pressure stockholders,  squeeze them out of their investment without giving them
any real choice and deprive them of the full value of their shares.

     The Rights are not  intended  to prevent a takeover of the Company and will
not do so.  Subject  to the  restrictions  described  above,  the  Rights may be
redeemed  by  the  Company  at  $0.001  per  Right  at  any  time  prior  to the
Distribution Date. Accordingly,  the Rights should not interfere with any merger
or business combination approved by the Board of Directors.

     However,  the Rights may have the effect of  rendering  more  difficult  or
discouraging  an acquisition  of the Company deemed  undesirable by the Board of
Directors.  The Rights may cause substantial  dilution to a person or group that
attempts  to acquire  the  Company on terms or in a manner not  approved  by the
Company's Board of Directors,  except pursuant to an offer  conditioned upon the
negation, purchase or redemption of the Rights.

     Issuance of the Rights does not in any way weaken the financial strength of
the Company or  interfere  with its business  plans.  The issuance of the Rights
themselves has no dilutive effect,  will not affect reported earnings per share,
should not be taxable to the Company or to its stockholders, and will not change
the way in which the Company's shares are presently traded.  The Company's Board
of Directors  believes that the Rights represent a sound and reasonable means of
addressing  the  complex  issues of  corporate  policy  created  by the  current
takeover environment.


     Item 7. Financial Statements And Exhibits.

     (c) Exhibits.

     4.1  Preferred  Stock  Rights  Agreement,  dated as of  January  21,  2004,
          between the Company and EquiServe Trust Company,  N.A.,  including the
          Certificate of  Designation,  the form of Rights  Certificate  and the
          Summary  of  Rights  attached   thereto  as  Exhibits  A,  B,  and  C,
          respectively.



                                   SIGNATURES


     Pursuant to the  requirements  of the Securities  Exchange Act of 1934, the
registrant  has duly  caused  this  report  to be  signed  on its  behalf by the
undersigned hereunto duly authorized.


Dated:  January 27, 2004                    NATIONAL INSTRUMENTS CORPORATION



                                            /s/ David G. Hugley
                                            ------------------------------------
                                            David G. Hugley
                                            Vice President & General Counsel
                                            Secretary




                                INDEX TO EXHIBITS


Exhibit
Number        Description of Document

 4.1          Preferred Stock Rights Agreement, dated as of January 21, 2004,
              between the Company and EquiServe Trust Company, N.A., including
              the Certificate of Designation, the form of Rights Certificate and
              the Summary of Rights attached thereto as Exhibits A, B, and C,
              respectively.