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<P align="center" style="font-size: 14pt"><B>UNITED STATES<BR>
SECURITIES AND EXCHANGE COMMISSION<BR>
<FONT style="font-size: 12pt">Washington, D.C. 20549
</FONT></B>

<P align="center" style="font-size: 18pt"><B>FORM 8-K</B>

<P align="center" style="font-size: 12pt"><B>CURRENT REPORT<BR>
Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934</B>

<P align="center" style="font-size: 10pt"><B>Date of Report (Date of earliest event reported): May 4, 2009</B>

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<P align="center" style="font-size: 24pt"><B>TERRA NITROGEN COMPANY, L.P.<BR></B>
<FONT style="font-size: 10pt">(Exact name of registrant as specified in its charter)
</FONT>

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    <TD style="border-bottom: 1px solid #000000"><B>Delaware</B></TD>
    <TD>&nbsp;</TD>
    <TD style="border-bottom: 1px solid #000000"><B>033-43007</B></TD>
    <TD>&nbsp;</TD>
    <TD style="border-bottom: 1px solid #000000"><B>73-1389684</B></TD>
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    <TD>(State or other Jurisdiction of Incorporation)</TD>
    <TD>&nbsp;</TD>
    <TD>(Commission File Number)</TD>
    <TD>&nbsp;</TD>
    <TD>(IRS Employer Identification No.)</TD>
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    <TD style="border-bottom: 1px solid #000000"><B>Terra Centre<BR>600 Fourth Street, P.O. Box 6000<BR>Sioux City, Iowa<BR></B></TD>
    <TD>&nbsp;</TD>
    <TD style="border-bottom: 1px solid #000000"><B>51102-6000</B></TD>
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    <TD>(Address of Principal Executive Offices)</TD>
    <TD>&nbsp;</TD>
    <TD>(Zip Code)</TD>
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<P align="center" style="font-size: 10pt">Registrant&#146;s telephone number, including area code: <B>(712) 277-1340</B>


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    <TD nowrap>(Former name or former address if changed since last report.)</TD>
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<P align="left" style="font-size: 10pt">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:

<P align="left" style="font-size: 10pt">
<FONT face="Wingdings">&#111;</FONT> Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)<BR><BR>
<FONT face="Wingdings">&#111;</FONT> Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)<BR><BR>
<FONT face="Wingdings">&#111;</FONT> Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))<BR><BR>
<FONT face="Wingdings">&#111;</FONT> Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))<BR>


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    <TD width="3%" nowrap align="left"><B>ITEM 5.02</B></TD>
    <TD width="1%">&nbsp;</TD>
    <TD><DIV style="text-align: justify"><B> DEPARTURE OF DIRECTORS OR CERTAIN OFFICERS; ELECTION OF DIRECTORS; APPOINTMENT OF CERTAIN OFFICERS;
COMPENSATORY ARRANGEMENTS OF CERTAIN OFFICERS</B></DIV></TD>
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<P align="justify" style="font-size: 10pt; text-indent: 8%">(b)&nbsp;By letter dated May&nbsp;4, 2009, Dennis B. Longmire (63)&nbsp;provided written notice of his intent to retire and
resign as a Director of Terra Nitrogen GP Inc. (&#147;TNGP&#148;), the General Partner of Terra Nitrogen Company, L.P. (the
&#147;Company&#148;) and an indirect, wholly-owned subsidiary of Terra Industries Inc. (&#147;Terra&#148;), effective May&nbsp;4, 2009.


<P align="justify" style="font-size: 10pt; text-indent: 8%">(d)&nbsp;Effective May&nbsp;5, 2009, the Board of Directors of Terra Nitrogen GP Inc. (&#147;TNGP&#148;) elected Anne H. Lloyd (48),
as a Director of TNGP. TNGP is the general partner of Terra Nitrogen Company, L.P. (the &#147;Company&#148;) and an indirect
wholly owned subsidiary of Terra Industries Inc. (&#147;Terra&#148;). Ms.&nbsp;Lloyd will serve as a member of and chair TNGP&#146;s Audit
Committee. An award of Company phantom units was made to Ms.&nbsp;Lloyd in conjunction with her appointment pursuant to and
consistent with provisions of the annual grant of phantom units to
non-employee directors of TNGP as approved by the board in October
2007. Ms.&nbsp;Lloyd has held senior financial and accounting positions with Martin Marietta Materials, Inc. (&#147;MLM&#148;), a
producer of construction aggregates for highway and other infrastructure projects, and in domestic commercial and
residential construction. Ms.&nbsp;Lloyd has been MLM&#146;s Senior Vice President and Chief Financial Officer since 2005 and
was elected Treasurer in 2006. From 1999 to 2005, Ms.&nbsp;Lloyd served as Vice President, Corporate Controller and Chief
Accounting Officer of MLM.


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    <TD width="3%" nowrap align="left"><B>ITEM 9.01</B></TD>
    <TD width="1%">&nbsp;</TD>
    <TD><DIV style="text-align: justify"><B> FINANCIAL STATEMENTS AND EXHIBITS.</B></DIV></TD>
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    <TD width="4%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">(d)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD><DIV style="text-align: justify">Exhibits</DIV></TD>
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    <TD width="8%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">99.1</TD>
    <TD width="1%">&nbsp;</TD>
    <TD><DIV style="text-align: justify">Press Release issued May&nbsp;5, 2009 announcing that Dennis B. Longmire retired
from TNGP&#146;s Board on May&nbsp;4, 2009 and that Anne H. Lloyd has been elected a director and
appointed as Chair of TNGP&#146;s Audit Committee effective May&nbsp;5, 2009.</DIV></TD>
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<P align="center" style="font-size: 10pt"><B>SIGNATURES</B>



<P align="justify" style="font-size: 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.


<P align="justify" style="font-size: 10pt; margin-left: 45%; font-size: 10pt">TERRA NITROGEN COMPANY, L.P.
<BR>
By: Terra Nitrogen GP Inc.
<BR>
Its: General Partner


<P align="justify" style="font-size: 10pt; margin-left: 45%; font-size: 10pt"><U>/s/ John W. Huey</U><BR>
<I>John W. Huey</I><BR><I>
Vice President, General Counsel and</I><BR><I>
Corporate Secretary</I><BR>


<P align="justify" style="font-size: 10pt">Date: May&nbsp;7, 2009


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<P align="center" style="font-size: 10pt; display: none">3




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<P align="center" style="font-size: 10pt"><B>EXHIBIT INDEX </B>

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<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="8%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">99.1</TD>
    <TD width="1%">&nbsp;</TD>
    <TD><DIV style="text-align: justify">Press Release issued May&nbsp;5, 2009 announcing that Dennis B. Longmire retired
from TNGP&#146;s Board on May&nbsp;4, 2009 and that Anne H. Lloyd has been elected a director and
appointed as Chair of TNGP&#146;s Audit Committee effective May&nbsp;5, 2009.</DIV></TD>
</TR>

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<P align="center" style="font-size: 10pt">&nbsp;

<P align="center" style="font-size: 10pt; display: none">3




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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): May 4, 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 5.02
DEPARTURE OF DIRECTORS OR CERTAIN OFFICERS; ELECTION OF DIRECTORS; APPOINTMENT OF CERTAIN OFFICERS;
COMPENSATORY ARRANGEMENTS OF CERTAIN OFFICERS
(b) By letter dated May 4, 2009, Dennis B. Longmire (63) provided written notice of his intent to retire and
resign as a Director of Terra Nitrogen GP Inc. ("TNGP"), the General Partner of Terra Nitrogen Company, L.P. (the
"Company") and an indirect, wholly-owned subsidiary of Terra Industries Inc. ("Terra"), effective May 4, 2009.
(d) Effective May 5, 2009, the Board of Directors of Terra Nitrogen GP Inc. ("TNGP") elected Anne H. Lloyd (48),
as a Director of TNGP. TNGP is the general partner of Terra Nitrogen Company, L.P. (the "Company") and an indirect
wholly owned subsidiary of Terra Industries Inc. ("Terra"). Ms. Lloyd will serve as a member of and chair TNGP's Audit
Committee. An award of Company phantom units was made to Ms. Lloyd in conjunction with her appointment pursuant to and
consistent with provisions of the annual grant of phantom units to
non-employee directors of TNGP as approved by the board in October
2007. Ms. Lloyd has held senior financial and accounting positions with Martin Marietta Materials, Inc. ("MLM"), a
producer of construction aggregates for highway and other infrastructure projects, and in domestic commercial and
residential construction. Ms. Lloyd has been MLM's Senior Vice President and Chief Financial Officer since 2005 and
was elected Treasurer in 2006. From 1999 to 2005, Ms. Lloyd served as Vice President, Corporate Controller and Chief
Accounting Officer of MLM.
ITEM 9.01
FINANCIAL STATEMENTS AND EXHIBITS.
(d)
Exhibits
99.1
Press Release issued May 5, 2009 announcing that Dennis B. Longmire retired
from TNGP's Board on May 4, 2009 and that Anne H. Lloyd has been elected a director and
appointed as Chair of TNGP's Audit Committee effective May 5, 2009.
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: May 7, 2009
EXHIBIT INDEX
99.1
Press Release issued May 5, 2009 announcing that Dennis B. Longmire retired
from TNGP's Board on May 4, 2009 and that Anne H. Lloyd has been elected a director and
appointed as Chair of TNGP's Audit Committee effective May 5, 2009.