UNITED STATES
                       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):  April 22, 2008
                                                          ------------------

                            MUELLER INDUSTRIES, INC.
                            ------------------------
             (Exact name of registrant as specified in its charter)

         Delaware                 1-6770                    25-0790410
         --------                 ------                    ----------
     (State or other          (Commission File             (IRS Employer
       jurisdiction                Number)              Identification No.)
     of incorporation)

    8285 Tournament Drive
          Suite 150
     Memphis, Tennessee                                        38125
     ------------------                                        -----
    (Address of principal                                     Zip Code
      executive offices)


Registrant's telephone number, including area code:    (901) 753-3200
                                                       --------------

Registrant's Former Name or Address, if changed since last report:  N/A
                                                                    ---

Check the appropriate box below if the Form 8-K filing is intended to
simultaneously satisfy the filing obligation of the registrant under any of the
following provisions (see General Instruction A.2. below):

     |_|  Written communications pursuant to Rule 425 under the Securities Act
          (17 CFR 230.425)

     |_|  Soliciting material pursuant to Rule 14a-12 under the Exchange Act
          (17 CFR 240.14a-12)

     |_|  Pre-commencement communications pursuant to Rule 14d-2(b) under the
          Exchange Act (17 CFR 240.14d-2(b))

     |_|  Pre-commencement communications pursuant to Rule 13e-4(c) under the
          Exchange Act (17 CFR 240.13e-4(c))

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Item 2.02.  Results of Operations and Financial Condition.

      On April 22, 2008 the Registrant issued a press release announcing
earnings for the quarter ended March 29, 2008. A copy of the press release
announcing the first quarter 2008 earnings is attached as Exhibit 99.1.


Item 9.01.  Financial Statements and Exhibits.

(d) Exhibits

      99.1 Press release, dated April 22, 2008 reporting first quarter 2008
earnings.


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                                   SIGNATURES

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

                                   MUELLER INDUSTRIES, INC.

                                   By:     /s/ Kent A. McKee
                                          ------------------
                                   Name:   Kent A. McKee
                                   Title:  Executive Vice President
                                           and Chief Financial Officer

Date: April 22, 2008


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                                  Exhibit Index

Exhibit No.    Description
-----------    -----------

      99.1     Press release, dated April 22, 2008.