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<DIV align="center" style="font-size: 14pt; margin-top: 12pt"><B>UNITED STATES<BR>
SECURITIES AND EXCHANGE COMMISSION</B>
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<DIV align="center" style="font-size: 12pt"><B>Washington, D.C. 20549</B>
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<DIV align="center" style="font-size: 18pt; margin-top: 12pt"><B>FORM 8-K</B>
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<DIV align="center" style="font-size: 12pt; margin-top: 12pt"><B>CURRENT REPORT<BR>
Pursuant to Section&nbsp;13 OR 15(d) of The Securities Exchange Act of 1934</B>
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<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><B>Date of Report (Date of earliest event reported): April 21, 2009</B></DIV>

<DIV align="center" style="font-size: 24pt; margin-top: 12pt"><B>TERRA NITROGEN COMPANY, L.P.</B>
</DIV>

<DIV align="center" style="font-size: 10pt">(Exact name of registrant as specified in its charter)</DIV>

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<TD nowrap align="center" valign="top"><B>Delaware
</B></TD>
<TD>&nbsp;</TD>
<TD align="center" valign="top"><B>033-43007
</B></TD>
<TD>&nbsp;</TD>
<TD align="center" valign="top"><B>73-1389684</B></TD>
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<TD align="center" valign="top">(State or other jurisdiction<BR>
of incorporation)
</TD>
<TD>&nbsp;</TD>
<TD align="center" valign="top">(Commission File Number)
</TD>
<TD>&nbsp;</TD>
<TD align="center" valign="top">(IRS Employer Identification No.)</TD>
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<TD align="center" valign="top"><B>Terra Centre<BR>600 Fourth Street, P.O. Box 6000<BR>Sioux City, Iowa <BR>

</B></TD>
<TD>&nbsp;</TD>
<TD align="center" valign="bottom"><B>&nbsp;<BR>51102-6000</B></TD>
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<TD align="center" valign="top">(Address of principal executive offices)
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<DIV align="center" style="font-size: 10pt; margin-top: 12pt">Registrant&#146;s telephone number, including area code: <B>(712) 277-1340</B></DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><B></B></DIV>

<DIV align="center" style="font-size: 10pt"><FONT style="border-top: 1px solid #000000">(Former name or former address, if changed since last report.)</FONT></DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">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: </DIV>

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<TD width="1%">&nbsp;</TD>
<TD>Written communications pursuant to Rule&nbsp;425 under the Securities Act (17 CFR 230.425)</TD>
</TR>

<TR>
<TD style="font-size: 6pt">&nbsp;</TD>
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<TD width="3%" nowrap align="left"><FONT face="wingdings" size="2">&#111;</FONT></TD>
<TD width="1%">&nbsp;</TD>
<TD>Soliciting material pursuant to Rule&nbsp;14a-12 under the Exchange Act (17 CFR 240.14a-12)</TD>
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<TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
<TD width="3%" nowrap align="left"><FONT face="wingdings" size="2">&#111;</FONT></TD>
<TD width="1%">&nbsp;</TD>
<TD>Pre-commencement communications pursuant to Rule&nbsp;14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))</TD>
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<TD>Pre-commencement communications pursuant to Rule&nbsp;13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))</TD>
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<P align="center" style="font-size: 10pt"><!-- Folio --><!-- /Folio --> </DIV>
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<DIV align="left" style="font-size: 10pt; margin-top: 10pt"><B>ITEM 2.02 RESULTS OF OPERATIONS AND FINANCIAL CONDITION.</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 10pt; text-indent: 8%">On April&nbsp;21, 2009, Terra Nitrogen Company, L.P. issued a press release setting forth Terra
Nitrogen Company, L.P.&#146;s first quarter earnings and announcing a cash distribution. A copy of the
press release is furnished herewith as Exhibit&nbsp;99.1.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 10pt"><B>ITEM 9.01 FINANCIAL STATEMENTS AND EXHIBITS.</B>
</DIV>



<DIV align="left" style="font-size: 10pt; margin-top: 10pt; margin-left: 4%">(d)&nbsp;Exhibits
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 10pt; text-indent: 8%">99.1
Press Release issued April&nbsp;21, 2009 reporting first quarter
results and announcing a cash distribution.
</DIV>


<DIV align="center" style="font-size: 10pt; margin-top: 10pt"><B>SIGNATURES</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 10pt; text-indent: 4%">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, thereunto
duly authorized.
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    <TD valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD colspan="3" valign="top" align="left">TERRA NITROGEN COMPANY, L.P.</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
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    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">By:
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Terra Nitrogen GP Inc.</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom" style="padding-top: 1px">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Its:
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">General Partner</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
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    <TD width="45%">&nbsp;</TD>
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    <TD width="15%">&nbsp;</TD>
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    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">/s/ John W. Huey
<DIV style="font-size: 1pt; border-top: 1px solid #000000">&nbsp;</DIV>
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
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    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top"><I>John W. Huey</I></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom" style="padding-top: 1px">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top"><I>Vice President, General Counsel and</I></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom" style="padding-top: 1px">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top"><I>Corporate Secretary</I></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
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<DIV align="left" style="font-size: 10pt; margin-top: 10pt">Date: April&nbsp;21, 2009
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Form 8-K
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 21, 2009
TERRA NITROGEN COMPANY, L.P.
(Exact name of registrant as specified in its charter)
Delaware
033-43007
73-1389684
(State or other jurisdiction
of incorporation)
(Commission File Number)
(IRS Employer Identification No.)
Terra Centre
600 Fourth Street, P.O. Box 6000
Sioux City, Iowa
51102-6000
(Address of principal executive offices)
(Zip Code)
Registrant's telephone number, including area code:
(712) 277-1340
(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:
o
Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
o
Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
o
Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
o
Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))
ITEM 2.02 RESULTS OF OPERATIONS AND FINANCIAL CONDITION.
On April 21, 2009, Terra Nitrogen Company, L.P. issued a press release setting forth Terra
Nitrogen Company, L.P.'s first quarter earnings and announcing a cash distribution. A copy of the
press release is furnished herewith as Exhibit 99.1.
ITEM 9.01 FINANCIAL STATEMENTS AND EXHIBITS.
(d) Exhibits
99.1
Press Release issued April 21, 2009 reporting first quarter
results and announcing a cash distribution.
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, thereunto
duly authorized.
TERRA NITROGEN COMPANY, L.P.
By:
Terra Nitrogen GP Inc.
Its:
General Partner
/s/ John W. Huey
John W. Huey
Vice President, General Counsel and
Corporate Secretary
Date: April 21, 2009