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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>UNITED STATES</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>SECURITIES AND EXCHANGE COMMISSION<BR>
Washington, DC 20549</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><FONT STYLE="font-size: 12pt"><B>FORM 8-K</B></FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>CURRENT REPORT<BR>
PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Date of Report (Date of earliest event reported):<B> June 29,
2012</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>&nbsp;</B></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 32%; text-align: center">&nbsp;</TD>
    <TD STYLE="width: 2%">&nbsp;</TD>
    <TD STYLE="width: 32%; font-weight: bold; text-align: center">UNITED STATES COMMODITY INDEX FUNDS TRUST</TD>
    <TD STYLE="width: 2%">&nbsp;</TD>
    <TD STYLE="width: 32%; text-align: center">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD STYLE="font-weight: bold; text-align: center">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD NOWRAP STYLE="text-align: center">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD NOWRAP STYLE="text-align: center">(Exact name of registrant as specified in its charter)</TD>
    <TD>&nbsp;</TD>
    <TD NOWRAP STYLE="text-align: center">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD NOWRAP STYLE="font-weight: bold; text-align: center">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD NOWRAP STYLE="font-weight: bold; text-align: center">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD NOWRAP STYLE="font-weight: bold; text-align: center">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD NOWRAP STYLE="font-weight: bold; text-align: center">Delaware</TD>
    <TD>&nbsp;</TD>
    <TD NOWRAP STYLE="font-weight: bold; text-decoration: none; text-align: center">001-34833</TD>
    <TD>&nbsp;</TD>
    <TD NOWRAP STYLE="font-weight: bold; text-align: center">27-1537655</TD></TR>
<TR STYLE="vertical-align: top">
    <TD NOWRAP STYLE="text-align: center">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD NOWRAP STYLE="text-align: center">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD NOWRAP STYLE="text-align: center">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD NOWRAP STYLE="text-align: center">(State or other jurisdiction</TD>
    <TD>&nbsp;</TD>
    <TD NOWRAP STYLE="text-align: center">(Commission File Number)</TD>
    <TD>&nbsp;</TD>
    <TD NOWRAP STYLE="text-align: center">(I.R.S. Employer</TD></TR>
<TR STYLE="vertical-align: top">
    <TD NOWRAP STYLE="text-align: center">of incorporation)</TD>
    <TD>&nbsp;</TD>
    <TD NOWRAP STYLE="text-align: center">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD NOWRAP STYLE="text-align: center">Identification No.)</TD></TR>
<TR STYLE="vertical-align: top">
    <TD NOWRAP STYLE="text-align: center">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD NOWRAP STYLE="font-weight: bold; text-align: center">1320 Harbor Bay Parkway, Suite 145</TD>
    <TD>&nbsp;</TD>
    <TD NOWRAP STYLE="text-align: center">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD NOWRAP STYLE="text-align: center">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD NOWRAP STYLE="font-weight: bold; text-align: center">Alameda, California 94502</TD>
    <TD>&nbsp;</TD>
    <TD NOWRAP STYLE="text-align: center">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD NOWRAP STYLE="text-align: center">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD NOWRAP STYLE="text-align: center">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD NOWRAP STYLE="text-align: center">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD NOWRAP STYLE="font-weight: bold; text-align: center">(510) 522-9600</TD>
    <TD>&nbsp;</TD>
    <TD NOWRAP STYLE="text-align: center">(Address of principal executive offices) (Zip Code)</TD>
    <TD>&nbsp;</TD>
    <TD NOWRAP STYLE="text-align: center">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>Registrant's telephone number, including area code</TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD STYLE="font-weight: bold; text-align: center">Not Applicable</TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD COLSPAN="3" NOWRAP STYLE="text-align: center">(Former name or former address, if changed since last report)</TD>
    <TD STYLE="text-align: center">&nbsp;</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">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 (<U>see</U><I> </I>General
Instruction A.2. below):</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

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<TR STYLE="vertical-align: top">
    <TD STYLE="width: 4%; font-family: Wingdings">&uml;</TD>
    <TD STYLE="width: 96%">Written communication pursuant to Rule&nbsp;425 under the Securities Act (17 CFR 230.425)</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="font-family: Wingdings">&uml;</TD>
    <TD>Soliciting material pursuant to Rule&nbsp;14a-12 under the Exchange Act (17 CFR 240.14a-12)</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="font-family: Wingdings">&uml;</TD>
    <TD>Pre-commencement communications pursuant to Rule&nbsp;14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="font-family: Wingdings">&uml;</TD>
    <TD>Pre-commencement communications pursuant to Rule&nbsp;13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

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<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0">Item 7.01. Regulation FD Disclosure.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">On June 29, 2012, the United States Commodity
Index Funds Trust (the &ldquo;Registrant&rdquo;), the United States Commodity Index Fund (&ldquo;USCI&rdquo;), the United States
Copper Index Fund (&ldquo;CPER&rdquo;) and the United States Agriculture Index Fund (&ldquo;USAG&rdquo;), each a series of the
Registrant, issued their monthly account statements for the month ended May 31, 2012, which are presented in the form of Statements
of Income (Loss), Statements of Changes in Net Asset Value and Statements of Changes in Units Outstanding, as required pursuant
to Rule 4.22 under the Commodity Exchange Act. A copy of the monthly account statements is furnished as Exhibit 99.1 to this Current
Report on Form 8-K and also can be found on each of USCI&rsquo;s, CPER&rsquo;s and USAG&rsquo;s website at www.unitedstatescommodityindexfund.com,
www.unitedstatescopperindexfund.com and www.unitedstatesagricultureindexfund.com, respectively. The information furnished in this
Current Report on Form 8-K, including Exhibit 99.1, shall not be deemed to be &ldquo;filed&rdquo; for purposes of Section 18 of
the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that section, nor shall it be deemed
incorporated by reference in any filing under the Securities Act of 1933, as amended, except as shall be expressly set forth by
specific reference in any such filing.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>Item&nbsp;9.01.&nbsp;&nbsp;Financial&nbsp;Statements&nbsp;and&nbsp;Exhibits.</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">(d) Exhibits.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">Exhibit 99.1 Monthly Account Statements
of the Registrant, USCI, CPER and USAG for the month ended May 31, 2012.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>SIGNATURES </B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">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
hereunto duly authorized.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

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<TR STYLE="vertical-align: bottom">
    <TD>&nbsp;</TD>
    <TD COLSPAN="2">UNITED STATES COMMODITY INDEX FUNDS TRUST</TD></TR>
<TR STYLE="vertical-align: bottom">
    <TD STYLE="width: 50%">&nbsp;</TD>
    <TD STYLE="width: 7%">By:</TD>
    <TD STYLE="width: 43%">United States Commodity Funds LLC, its sponsor</TD></TR>
<TR STYLE="vertical-align: bottom">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom">
    <TD>Date: June 29, 2012</TD>
    <TD>By:</TD>
    <TD STYLE="border-bottom: windowtext 1pt solid">/s/ Howard Mah</TD></TR>
<TR STYLE="vertical-align: bottom">
    <TD>&nbsp;</TD>
    <TD>Name:</TD>
    <TD>Howard Mah</TD></TR>
<TR STYLE="vertical-align: bottom">
    <TD>&nbsp;</TD>
    <TD>Title:</TD>
    <TD>Chief Financial Officer</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>



<P STYLE="margin: 0"></P>

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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, DC 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):
June 29,
2012
UNITED STATES COMMODITY INDEX FUNDS TRUST
(Exact name of registrant as specified in its charter)
Delaware
001-34833
27-1537655
(State or other jurisdiction
(Commission File Number)
(I.R.S. Employer
of incorporation)
Identification No.)
1320 Harbor Bay Parkway, Suite 145
Alameda, California 94502
(510) 522-9600
(Address of principal executive offices) (Zip Code)
Registrant's telephone number, including area code
Not Applicable
(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 (
see
General
Instruction A.2. below):
¨
Written communication 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 7.01. Regulation FD Disclosure.
On June 29, 2012, the United States Commodity
Index Funds Trust (the "Registrant"), the United States Commodity Index Fund ("USCI"), the United States
Copper Index Fund ("CPER") and the United States Agriculture Index Fund ("USAG"), each a series of the
Registrant, issued their monthly account statements for the month ended May 31, 2012, which are presented in the form of Statements
of Income (Loss), Statements of Changes in Net Asset Value and Statements of Changes in Units Outstanding, as required pursuant
to Rule 4.22 under the Commodity Exchange Act. A copy of the monthly account statements is furnished as Exhibit 99.1 to this Current
Report on Form 8-K and also can be found on each of USCI's, CPER's and USAG's website at www.unitedstatescommodityindexfund.com,
www.unitedstatescopperindexfund.com and www.unitedstatesagricultureindexfund.com, respectively. The information furnished in this
Current Report on Form 8-K, including Exhibit 99.1, shall not be deemed to be "filed" for purposes of Section 18 of
the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that section, nor shall it be deemed
incorporated by reference in any filing under the Securities Act of 1933, as amended, except as shall be expressly set forth by
specific reference in any such filing.
Item 9.01.  Financial Statements and Exhibits.
(d) Exhibits.
Exhibit 99.1 Monthly Account Statements
of the Registrant, USCI, CPER and USAG for the month ended May 31, 2012.
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
hereunto duly authorized.
UNITED STATES COMMODITY INDEX FUNDS TRUST
By:
United States Commodity Funds LLC, its sponsor
Date: June 29, 2012
By:
/s/ Howard Mah
Name:
Howard Mah
Title:
Chief Financial Officer