As filed with the Securities and Exchange Commission on July 11, 2012

No. 333-181842

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Amendment No. 3

to

FORM S-1

REGISTRATION STATEMENT

UNDER

THE SECURITIES ACT OF 1933

TRONOX LIMITED

(ACN 153 348 111)

(Exact name of registrant as specified in its charter)

One Stamford Plaza

263 Tresser Boulevard, Suite 1100

Stamford, Connecticut 06901

(203) 705-3800

(Address, including zip code, and telephone number, including area code, of registrant’s principal executive offices)

Michael J. Foster

General Counsel

Tronox Limited

One Stamford Plaza

263 Tresser Boulevard, Suite 1100

Stamford, Connecticut 06901

(203) 705-3800

(Name, address, including zip code, and telephone number, including area code, of agent for service)

Copies of all communications, including communications sent to agent for service, should be sent to:

Daniel E. Wolf

Christian O. Nagler

Kirkland & Ellis LLP

601 Lexington Avenue

New York, New York 10022

(212) 446-4800

Approximate date of commencement of proposed sale to the public:  As soon as practicable after this Registration Statement becomes effective.

If any of the securities being registered on this Form are to be offered on a delayed or continuous basis pursuant to Rule 415 under the Securities Act of 1933, check the following box:  x

If this Form is filed to register additional securities for an offering pursuant to Rule 462(b) under the Securities Act, please check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering.  ¨

If this Form is a post-effective amendment filed pursuant to Rule 462(c) under the Securities Act, check the following box and list the Securities act registration statement number of the earlier effective registration statement for the same offering.  ¨

If this Form is a post-effective amendment filed pursuant to Rule 462(d) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering.  ¨

If delivery of the prospectus is expected to be made pursuant to Rule 434, please check the following box.  ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act.

CALCULATION OF REGISTRATION FEE

The registrant hereby amends this registration statement on such date or dates as may be necessary to delay its effective date until the registrant shall file a further amendment which specifically states that this registration statement shall thereafter become effective in accordance with section 8(a) of the Securities Act of 1933 or until the registration statement shall become effective on such date as the Commission acting pursuant to said section 8(a), may determine.

EXPLANATORY NOTE

This Pre-Effective Amendment No. 3 to the Registration Statement on Form S-1 (File No. 333-181842) of Tronox Limited is filed for the purpose of amending the Exhibit Index, which is incorporated by reference by “Part II—Item 16. Exhibits and Financial Statement Schedules.”

PART II—INFORMATION NOT REQUIRED IN PROSPECTUS

Item 13. Other Expenses of Issuance and Distribution.

The following is an estimate of fees and expenses to be incurred by the Company in connection with preparation of this Registration Statement and the issuance of the Shares offered hereby:

Item 14. Indemnification of Directors and Officers.

Except as set forth below, there is no provision in any contract, arrangement or statute under which any director, secretary or other officer of Tronox Limited is insured or indemnified in any manner against any liability which he/she may incur in his/her capacity as such.

The Constitution of Tronox Limited requires Tronox Limited to, subject to and so far as is permitted by the Australian Corporations Act and the Australian Competition and Consumer Act 2010, indemnify every director, secretary or other officer of Tronox Limited and its related bodies corporate against a liability incurred as such a director, secretary or other officer to a person (other than to Tronox Limited or a related body corporate of Tronox Limited), unless the liability arises out of conduct involving a lack of good faith. This is a continuing indemnity and will apply in respect of all acts done while a director, secretary or other officer of Tronox Limited (or one of its wholly-owned subsidiaries) even if that person is not a director, secretary or other officer at the time the claim is made. The Constitution of Tronox Limited permits Tronox Limited to make a payment in respect of legal costs incurred by a director, secretary, officer or employee in defending an action for a liability incurred as such a director, secretary, officer or employee or in resisting or responding to actions taken by a government agency or a liquidator.

Tronox Limited will enter into a Deed of Access, Indemnity and Insurance (“Deed of Indemnity”) with each of its respective directors to, among other things, give effect to these rights.

Prior to completion of the Transaction, Tronox Limited’s directors and officers are covered by the policies and procedures of Tronox Incorporated as a wholly-owned subsidiary including directors and officers insurance policies. Following completion of the Transaction, we expect directors and officers of Tronox Limited and Tronox Incorporated to be covered by an insurance policy which Tronox Limited will acquire.

Prior to completion of the Transaction, Tronox Limited will insure against amounts that it may be liable to pay to directors, secretaries, officers or certain employees pursuant to the Constitution of Tronox Limited, the Deed of Indemnity or that Tronox Limited otherwise agrees to pay by way of indemnity. Tronox Limited will pay premiums for this “Directors and Officers” insurance (“D&O Insurance”). The insurance policy also will insure directors, secretaries, officers and some employees against certain liabilities (including legal costs) they may incur as officers or employees of Tronox Limited. The Deed of Indemnity will provide that, subject to the Australian Corporations Act, during the director’s term of office as an officer of Tronox Limited (or as an officer or trustee of a corporation or trust of which the director is appointed or nominated an officer or trustee by Tronox Limited or a wholly-owned subsidiary of Tronox Limited) and for seven years after the director ceases to hold such office, Tronox Limited must use its best efforts to effect and maintain D&O Insurance covering the director.

There are certain provisions of the Australian Corporations Act that restrict Tronox Limited from indemnifying directors, secretaries and other officers in certain circumstances. These are described below.

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Australian Law

Australian Corporations Act

Section 199A(1) of the Australian Corporations Act provides that a company or a related body corporate must not exempt a person from a liability to the company incurred as a director, secretary or other officer of the company.

Section 199A(2) of the Australian Corporations Act provides that a company or a related body corporate must not indemnify a person against any of the following liabilities incurred as a director, secretary or other officer of the company:

Section 199A(2) of the Australian Corporations Act does not apply to a liability for legal costs.

Section 199A(3) of the Australian Corporations Act provides that a company or a related body corporate must not indemnify a person against legal costs incurred in defending an action for a liability incurred as a director, secretary or other officer of the company if the costs are incurred:

Section 199B of the Australian Corporations Act provides that a company or a related body corporate must not pay, or agree to pay, a premium for a contract insuring a person who is or has been a director, secretary or other officer of the company against a liability (other than one for legal costs) arising out of:

For the purpose of Sections 199A and 199B, an “officer” of a company includes:

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Insurance

The directors and officers of Tronox Limited and the duly authorized United States representative of each are insured against certain liabilities, including certain insured liabilities under United States securities laws, which they may incur in their capacity as such under a liability insurance policy carried by the Tronox Limited.

Insofar as indemnification for liabilities arising under the Securities Act of 1933 may be permitted to directors, officers or persons controlling the registrant pursuant to the foregoing provisions, the registrant has been informed that in the opinion of the Securities and Exchange Commission such indemnification is against public policy as expressed in the Act and is therefore unenforceable.

Item 15. Recent Sales of Unregistered Securities.

Not Applicable.

Item 16. Exhibits and Financial Statement Schedules.

(a) The financial statements required to be included in this registration statement appear immediately following the signature page to this registration statement beginning on page F-1.

(b) The information called for by this Item is incorporated herein by reference from the Exhibit Index following the signature page of this registration statement.

Item 17. Undertakings.

(a) The undersigned registrant hereby undertakes:

(i) To include any propectus required by section 10(a)(3) of the Securities Act of 1933;

(ii) To reflect in the prospectus any facts or events arising after the effective date of the registration statement (or the most recent post-effective amendment thereof) which, individually or in the aggregate, represent a fundamental change in the information set forth in the registration statement. Notwithstanding the foregoing, any increase or decrease in volume of securities offered (if the total dollar value of securities offered would not exceed that which was registered) and any deviation from the low or high end of the estimated maximum offering range may be reflected in the form of prospectus filed with the Commission pursuant to Rule 424(b) if, in the aggregate, the changes in volume and price represent no more than 20% change in the maximum aggregate offering price set forth in the “Calculation of Registration Fee” table in the effective registration statement.

(iii) To include any material information with respect to the plan of distribution not previously disclosed in the registration statement or any material change to such information in the registration statement;

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(i) Any preliminary prospectus or prospectus of the undersigned registrant relating to the offering required to be filed pursuant to Rule 424;

(ii) Any free writing prospectus relating to the offering prepared by or on behalf of the undersigned registrant or used or referred to by the undersigned registrant;

(iii) The portion of any other free writing prospectus relating to the offering containing material information about the undersigned registrant or its securities provided by or on behalf of the undersigned registrant; and

(iv) Any other communication that is an offer in the offering made by the undersigned registrant to the purchaser.

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SIGNATURES

Pursuant to the requirements of the Securities Act of 1933, as amended, the registrant has duly caused this Registration Statement on Form S-1 to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Stamford, State of Connecticut, on this 11^th day of July 2012.

Pursuant to the requirements of the Securities Act of 1933, this registration statement has been signed by the following persons in the capacities and on the dates indicated.

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EXHIBIT INDEX

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