TRQ Turquoise Hill Resources Ltd

Names of reporting persons

Temasek Holdings (Private) Limited

Check the appropriate box if a member of a group (see instructions)

(a)   ¨         (b)   ¨

SEC use only

Citizenship or place of organization

    Republic of Singapore

Number of

shares

beneficially

owned by

each

reporting

person

with:

Sole voting power

    0

Shared voting power

    171,524,394*

Sole dispositive power

    0

Shared dispositive power

    171,524,394*

Aggregate amount beneficially owned by each reporting person

    171,524,394*

Check if the aggregate amount in Row (9) excludes certain shares (see instructions)     ¨

Percent of class represented by amount in Row (9)

    8.5%**

Type of reporting person (see instructions)

    HC

Names of reporting persons

Tembusu Capital Pte. Ltd.

Check the appropriate box if a member of a group (see instructions)

(a)   ¨         (b)   ¨

SEC use only

Citizenship or place of organization

    Republic of Singapore

Number of

shares

beneficially

owned by

each

reporting

person

with:

Sole voting power

    0

Shared voting power

    171,524,394*

Sole dispositive power

    0

Shared dispositive power

    171,524,394*

Aggregate amount beneficially owned by each reporting person

    171,524,394*

Check if the aggregate amount in Row (9) excludes certain shares (see instructions)     ¨

Percent of class represented by amount in Row (9)

    8.5%**

Type of reporting person (see instructions)

    HC

Name of Issuer:

Turquoise Hill Resources Ltd. (formerly Ivanhoe Mines Ltd.)

Address of Issuer’s Principal Executive Offices:

Suite 354-200 Granville Street, Vancouver, British Columbia, Canada V6C 1S4

Name of Person Filing:

(i)     Temasek Holdings (Private) Limited (“Temasek Holdings”)

(ii)    Tembusu Capital Pte. Ltd. (“Tembusu”)

Address of Principal Business Office or, if none, Residence:

(i)     60B Orchard Road, #06-18, The Atrium@Orchard, Singapore 238891

(ii)    60B Orchard Road, #06-18, The Atrium@Orchard, Singapore 238891

Citizenship:

(i)     Singapore

(ii)    Singapore

Title of Class of Securities:

Common Shares without par value.

CUSIP Number:

The CUSIP number of the Common Shares is 46579N103.

If this statement is filed pursuant to §§240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:

Ownership.

(a)    Amount beneficially owned:

As of December 31, 2013, Ellington Investments Pte. Ltd. (“Ellington”) directly owned 49,155,255 Common Shares, and was deemed to beneficially own another 49,155,255 Common Shares underlying rights received by Ellington in connection with the issuer’s rights offering. Ellington is wholly-owned by Bartley Investments Pte. Ltd., which is wholly–owned by Tembusu, which is wholly-owned by Temasek Holdings. Ellington subsequently exercised its rights and as of the date of this Schedule, Ellington directly owns 98,310,510 Common Shares.

As of December 31, 2013, Dahlia Investments Pte. Ltd. (“Dahlia”) directly owned 36,606,942 Common Shares, and was deemed to beneficially own another 36,606,942 Common Shares underlying rights received by Dahlia in connection with the issuer’s rights offering. Dahlia is wholly owned by Thomson Capital Pte. Ltd., which is wholly-owned by Tembusu, which is wholly-owned by Temasek Holdings. Dahlia subsequently exercised its rights and as of the date of this Schedule, Dahlia directly owns 73,213,884 Common Shares.

Accordingly, as of December 31, 2013, each of Temasek Holdings and Tembusu may be deemed to beneficially own the 98,310,510 Common Shares directly owned or deemed to be beneficially owned by Ellington and the 73,213,884 Common Shares directly owned or deemed to be beneficially owned by Dahlia, being an aggregate of 171,524,394 Common Shares. As of the date of this Schedule, each of Temasek Holdings and Tembusu may be deemed to beneficially own the 98,310,510 Common Shares directly owned by Ellington and the 73,213,884 Common Shares directly owned by Dahlia, being an aggregate of 171,524,394 Common Shares.

(b)    Percent of class:

As of the date of this Schedule, each of Temasek Holdings and Tembusu may be deemed to beneficially own 8.5% of the Common Shares outstanding.

All percentage calculations in this schedule are based on 2,012,233,201 Common Shares, comprising (i) the 1,006,116,602 Common Shares reported to have been issued on January 13, 2014 in connection with Turquoise Hill Resources Ltd.’s rights offering in the report on Form 6-K furnished to the SEC on January 17, 2014, and (ii) the 1,006,116,599 Common Shares reported as outstanding by Turquoise Hill Resources Ltd. as of November 25, 2013 in the prospectus on Form F-10/A filed with the SEC on November 26, 2013.

(c)    Number of shares as to which the person has:

(i)     Sole power to vote or to direct the vote:

 0.

(ii)    Shared power to vote or to direct the vote:

 Temasek Holdings: 171,524,394

 Tembusu: 171,524,394

(iii)   Sole power to dispose or to direct the disposition of:

 0.

(iv)   Shared power to dispose or to direct the disposition of:

 Temasek Holdings: 171,524,394

 Tembusu: 171,524,394

Ownership of Five Percent or Less of a Class.

Not Applicable.

Ownership of More than Five Percent on Behalf of Another Person.

Not Applicable.

Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on By the Parent Holding Company.

See Exhibit 2 to the statement on Schedule 13G filed with the SEC by Temasek Holdings and Tembusu with respect to the issuer on June 8, 2012.

Identification and Classification of Members of the Group.

Not Applicable.

Notice of Dissolution of Group.

Not Applicable

Certification.

By signing below, I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under §240.14a-11.