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      <div>&#160;</div>
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    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>UNITED
      STATES</strong></font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>SECURITIES
      AND EXCHANGE COMMISSION</strong></font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>Washington,
      D.C. 20549</strong></font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center">&#160;</div>
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      <div>&#160;</div>
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    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 14pt; FONT-FAMILY: Times New Roman"><strong>FORM
      8-K</strong></font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>CURRENT
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      to Section 13 or 15(d) of the Securities Exchange Act </strong></font><a name="return"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>of
      1934</strong></font></a></div>
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    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 14pt; FONT-FAMILY: Times New Roman"><strong>Century
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              <div style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>2511
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            <td align="left" colspan="3" valign="top" width="27%">&#160;</td>
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            <td align="left" colspan="3" valign="top" width="27%">&#160;</td>
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    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Check
      the
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      satisfy the filing obligation of the registrant under any of the following
      provisions:</font></div>
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              <div align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Soliciting
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                240.14a-12) </font></div>
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    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>Item
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    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>Item
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    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 36pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">On
      May 2,
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      announcing its results of operations for the quarter ended March 31, 2006.
      A
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    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 36pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">The
      Company will hold a follow-up conference call on Tuesday, May 2, 2006, at 5:30
      p.m. Eastern Time. A live broadcast of the earnings call will be available
      via
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      Anyone
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      registration process for the webcast at least 10 minutes before the live call
      is
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      for
      replay approximately two hours following the live call. </font></div>
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      "forward-looking statements" within the meaning of U.S. federal securities
      laws.
      The Company has based its forward-looking statements on current expectations
      and
      projections about the future, however, these statements are subject to risks,
      uncertainties and assumptions, any of which could cause the Company's actual
      results to differ materially from those expressed in its forward-looking
      statements. More information about these risks, uncertainties and assumptions
      can be found in the risk factors and forward-looking statements cautionary
      language contained in the Company's Annual Report on Form 10-K and in other
      filings made with the Securities and Exchange Commission. The Company does
      not
      undertake, and specifically disclaims, any obligation to revise any
      forward-looking statements to reflect the occurrence of anticipated or
      unanticipated events or circumstances after the date such forward-looking
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          <tr valign="top" style="line-height: 1.25;">
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      following exhibit is being furnished with this report pursuant to Items 2.02
      and
      7.01:</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><br></div>
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          <tr>
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                Number</u></font></div>
            </td>
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            <td align="left" valign="top" width="78%" style="border-bottom: medium none;">
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          <tr>
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                Release, dated May 2, 2006, announcing the Company&#8217;s results of operations
                for the quarter ended March 31,
                2006.</font></div>
            </td>
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    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>SIGNATURES</strong></font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 9pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 36pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">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.</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">
      <table align="center" bgcolor="#ffffff" border="0" cellpadding="0" cellspacing="0" width="100%">

          <tr valign="top" bgcolor="#ffffff">
            <td width="50%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">&#160;</font></td>
            <td width="1%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">&#160;</font></td>
            <td width="49%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">&#160;</font></td>
          </tr>
          <tr valign="top" bgcolor="#ffffff">
            <td><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">&#160;</font></td>
            <td colspan="2">
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                ALUMINUM COMPANY</strong></font></div>
            </td>
          </tr>
          <tr valign="top" bgcolor="#ffffff">
            <td><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">&#160;<br>&#160;</font></td>
            <td><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">&#160;<br>&#160;</font></td>
            <td><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">&#160;<br>&#160;</font></td>
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          <tr valign="top" bgcolor="#ffffff">
            <td><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">Date:&#160;<font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><u>May
              2, 2006</u></font></font></td>
            <td><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">By:&#160;&#160;</font></td>
            <td><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">/s/&#160;Robert
              R.
              Nielsen</font></td>
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            <td align="left">
              <hr style="COLOR: black" align="left" noshade size="2" width="80%"><font size="2">Name:
              Robert R. Nielsen</font></td>
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                Executive Vice President, General Counsel and
                Secretary</font></div>
            </td>
          </tr>

      </table>
    </div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
    <div id="PGBRK" style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt">
      <div id="FTR">
        <div id="GLFTR" style="WIDTH: 100%" align="left">&#160;</div>
      </div>
      <div id="PN" style="PAGE-BREAK-AFTER: always">
        <div style="WIDTH: 100%; TEXT-ALIGN: center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">3</font></div>
        <div style="WIDTH: 100%; TEXT-ALIGN: center">
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        </div>
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      <div id="HDR">
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      </div>
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    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>Exhibit
      Index</strong></font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><br></div>
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                  Number</u></font></div>
              </td>
              <td align="left" valign="top" width="7%" style="border-bottom: medium none;">&#160;</td>
              <td align="left" valign="top" width="78%" style="border-bottom: medium none;">
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              </td>
            </tr>
            <tr>
              <td align="left" valign="top" width="15%">
                <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">99.1</font></div>
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              <td align="left" valign="bottom" width="78%">
                <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Press
                  Release, dated May 2, 2006, announcing the Company&#8217;s results of operations
                  for the quarter ended March 31,
                  2006.</font></div>
              </td>
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{"company-data": {"conformed-name": "CENTURY ALUMINUM CO", "cik": "0000949157", "assigned-sic": "3334", "irs-number": "133070826", "state-of-incorporation": "DE", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "8-K", "act": "34", "file-number": "000-27918", "film-number": "06799950"}, "business-address": {"street1": "2511 GARDEN ROAD", "street2": "BUILDING A SUITE 200", "city": "MONTEREY", "state": "CA", "zip": "93940", "phone": "3042736000"}, "mail-address": {"street1": "2511 GARDEN ROAD", "street2": "BUILDING A SUITE 200", "city": "MONTEREY", "state": "CA", "zip": "93940"}}
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): May 2, 2006
Century
      Aluminum Company
(Exact
      name of registrant as specified in its charter)
Delaware
0-27918
13-3070826
(State
                or other jurisdiction of Incorporation)
(Commission
                File Number)
(IRS
                Employer Identification No.)
2511
                Garden Road
Building
                A, Suite 200
Monterey,
                California
93940
(Address
                of principal executive offices)
(Zip
                Code)
(831)
                642-9300
(Registrant's
                telephone number, including area code)
N/A
(Former
                name or former address, if changed since last report)
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:
□
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))
Item
      2.02. Results of Operation and Financial Condition
Item
      7.01 Regulation FD Disclosure
On
      May 2,
      2006, Century Aluminum Company (the "Company") issued an earnings release
      announcing its results of operations for the quarter ended March 31, 2006.
      A
      copy of the Company's earnings release is attached as Exhibit 99.1.
The
      Company will hold a follow-up conference call on Tuesday, May 2, 2006, at 5:30
      p.m. Eastern Time. A live broadcast of the earnings call will be available
      via
      an audio webcast accessible by visiting the Investors page of the Company's
      website, located at
www.centuryaluminum.com
.
      Anyone
      interested in listening to the live broadcast should plan to begin the
      registration process for the webcast at least 10 minutes before the live call
      is
      scheduled to begin. A replay of the webcast will be archived and available
      for
      replay approximately two hours following the live call.
The
      information in this Form 8-K and Exhibit 99.1 attached hereto may contain
      "forward-looking statements" within the meaning of U.S. federal securities
      laws.
      The Company has based its forward-looking statements on current expectations
      and
      projections about the future, however, these statements are subject to risks,
      uncertainties and assumptions, any of which could cause the Company's actual
      results to differ materially from those expressed in its forward-looking
      statements. More information about these risks, uncertainties and assumptions
      can be found in the risk factors and forward-looking statements cautionary
      language contained in the Company's Annual Report on Form 10-K and in other
      filings made with the Securities and Exchange Commission. The Company does
      not
      undertake, and specifically disclaims, any obligation to revise any
      forward-looking statements to reflect the occurrence of anticipated or
      unanticipated events or circumstances after the date such forward-looking
      statements are made.
Item
      9.01. Financial Statements and Exhibits
(c)
Exhibits
The
      following exhibit is being furnished with this report pursuant to Items 2.02
      and
      7.01:
Exhibit
                Number
Description
99.1
Press
                Release, dated May 2, 2006, announcing the Company's results of operations
                for the quarter ended March 31,
                2006.
2
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 thereunto
      duly authorized.
CENTURY
                ALUMINUM COMPANY
Date:
May
              2, 2006
By:
/s/ Robert
              R.
              Nielsen
Name:
              Robert R. Nielsen
Title:
                Executive Vice President, General Counsel and
                Secretary
3
Exhibit
      Index
Exhibit
                  Number
Description
99.1
Press
                  Release, dated May 2, 2006, announcing the Company's results of operations
                  for the quarter ended March 31,
                  2006.
4