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): July 25, 2003


                               NL INDUSTRIES, INC.

              (Exact name of registrant as specified in charter)



New Jersey                        1-640                         13-5267260
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(State or other           (Commission File No.)             (Employer ID No.)
jurisdiction of
incorporation)



5430 LBJ Freeway, Suite 1700, Dallas, Texas                        75240-2697
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(Address of principal executive offices)                           (Zip Code)



Registrant's telephone number, including area code              (972) 233-1700
                                                                --------------


           16825 Northchase Dr., Suite 1200, Houston, Texas 77060
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        (Former name or former address, if changed since last report)


<PAGE>


Item 7.

c)    Exhibits

99.1  Press Release dated July 25, 2003 issued by NL Industries, Inc.


Item 9.     Regulation FD Disclosure.
-------

      The registrant  hereby  furnishes the  information  set forth in the press
release  issued on July 25, 2003, a copy of which is attached  hereto as Exhibit
99.1 and  incorporated  herein  by  reference.  The  registrant  furnishes  this
information  under this Item 9 and under  "Item 12.  Results of  Operations  and
Financial  Condition,"  pursuant  to  the  interim  guidance  contained  in  the
Securities  and  Exchange  Commission  Release  34-47583  promulgated  under the
Securities  Exchange Act of 1934, as amended (the "Exchange  Act"),  among other
statutes.

      The information,  including the exhibit,  the registrant furnishes in this
report is not deemed  "filed" for  purposes of section 18 of the Exchange Act or
otherwise subject to the liabilities of that section. Registration statements or
other  documents  filed with the  Securities and Exchange  Commission  shall not
incorporate this information by reference,  except as otherwise expressly stated
in such filing.


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<PAGE>


                                    SIGNATURE



      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 thereunto duly authorized.


                                          NL INDUSTRIES, INC.
                                          (Registrant)



                                          /s/Robert D. Hardy
                                          -------------------------------
                                          Robert D. Hardy
                                          Vice President, Chief Financial
                                          Officer & Controller


Dated: July 25, 2003