N-Q

Quarterly Statement of Investments | See Notes to Statement of Investments.

Templeton Developing Markets Trust

Notes to Statement of Investments (unaudited)

1. ORGANIZATION

Templeton Developing Markets Trust (Fund) is registered under the Investment Company Act of 1940, as amended, as an open-end investment company.

2. FINANCIAL INSTRUMENT VALUATION

The Fund's investments in securities and other financial investments are carried at fair value daily. Fair value is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants on the measurement date. Under procedures approved by the Fund’s Board of Trustees, the Fund may utilize independent pricing services, quotations from securities and financial instrument dealers, and other market sources to determine fair value.

Equity securities listed on an exchange or on the NASDAQ National Market System are valued at the last quoted sale price or the official closing price of the day, respectively. Foreign equity securities are valued as of the close of trading on the foreign stock exchange on which the security is primarily traded, or the NYSE, whichever is earlier. The value is then converted into its U.S. dollar equivalent at the foreign exchange rate in effect at the close of the NYSE on the day that the value of the security is determined. Over-the-counter securities are valued within the range of the most recent quoted bid and ask prices. Securities that trade in multiple markets or on multiple exchanges are valued according to the broadest and most representative market. Certain equity securities are valued based upon fundamental characteristics or relationships to similar securities. Investments in open-end mutual funds are valued at the closing net asset value.

The Fund has procedures to determine the fair value of securities and other financial instruments for which market prices are not readily available or which may not be reliably priced. Under these procedures, the Fund primarily employs a market-based approach which may use related or comparable assets or liabilities, recent transactions, market multiples, book values, and other relevant information for the investment to determine the fair value of the investment. The Fund may also use an income-based valuation approach in which the anticipated future cash flows of the investment are discounted to calculate fair value. Discounts may also be applied due to the nature or duration of any restrictions on the disposition of the investments. Due to the inherent uncertainty of valuations of such investments, the fair values may differ significantly from the values that would have been used had an active market existed.

Trading in securities on foreign securities stock exchanges and over-the-counter markets may be completed before the daily close of business on the NYSE. Occasionally, events occur between the time at which trading in a foreign security is completed and the close of the NYSE that might call into question the reliability of the value of a portfolio security held by the Fund. As a result, differences may arise between the value of the Fund’s portfolio securities as determined at the foreign market close and the latest indications of value at the close of the NYSE. In order to minimize the potential for these differences, the investment manager monitors price movements following the close of trading in foreign stock markets through a series of country specific market proxies (such as baskets of American Depository Receipts, futures contracts and exchange traded funds). These price movements are measured against established trigger thresholds for each specific market proxy to assist in determining if an event has occurred that may call into question the reliability of the values of the foreign securities held by the Fund. If such an event occurs, the securities may be valued using fair value procedures, which may include the use of independent pricing services.

Item 2. Controls and Procedures.

(a) Evaluation of Disclosure Controls and Procedures. The Registrant maintains disclosure controls and procedures that are designed to ensure that information required to be disclosed in the Registrant’s filings under the Securities Exchange Act of 1934 and the Investment Company Act of 1940 is recorded, processed, summarized and reported within the periods specified in the rules and forms of the Securities and Exchange Commission. Such information is accumulated and communicated to the Registrant’s management, including its principal executive officer and principal financial officer, as appropriate, to allow timely decisions regarding required disclosure. The Registrant’s management, including the principal executive officer and the principal financial officer, recognizes that any set of controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving the desired control objectives.

Within 90 days prior to the filing date of this Quarterly Schedule of Portfolio Holdings on Form N-Q, the Registrant had carried out an evaluation, under the supervision and with the participation of the Registrant’s management, including the Registrant’s principal executive officer and the Registrant’s principal financial officer, of the effectiveness of the design and operation of the Registrant’s disclosure controls and procedures. Based on such evaluation, the Registrant’s principal executive officer and principal financial officer concluded that the Registrant’s disclosure controls and procedures are effective.

(b) Changes in Internal Controls. There have been no significant changes in the Registrant’s internal controls or in other factors that could significantly affect the internal controls subsequent to the date of their evaluation in connection with the preparation of this Quarterly Schedule of Portfolio Holdings on Form N-Q.

Item 3. Exhibits.

(a) Certification pursuant to Section 30a-2 under the Investment Company Act of 1940 of Laura F. Fergerson, Chief Executive Officer - Finance and Administration, and Mark H. Otani, Chief Financial Officer and Chief Accounting Officer

DMT N-Q PE 3/31/11

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

Templeton Developing Markets Trust

By /s/ LAURA F. FERGERSON        
       Laura F. Fergerson
       Chief Executive Officer –
       Finance and Administration
Date May 26, 2011

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.

By /s/ LAURA F. FERGERSON         
       Laura F. Fergerson
       Chief Executive Officer –
       Finance and Administration
Date May 26, 2011

By /s/ MARK H. OTANI               
       Mark H. Otani
       Chief Financial Officer and
       Chief Accounting Officer
Date May 26, 2011

DMT N-Q PE 3/31/11

EX-99.CERT

Exhibit 3(a)

I, Laura F. Fergerson, certify that:

1. I have reviewed this report on Form N-Q of Templeton Developing Markets Trust;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the schedules of investments included in this report fairly present in all material respects the investments of the registrant as of the end of the fiscal quarter for which the report is filed;

4. The registrant's other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940) and internal control over financial reporting (as defined in Rule 30a-3(d) under the Investment Company Act of 1940) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of a date within 90 days prior to the filing date of this report, based on such evaluation; and

(d) Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5. The registrant's other certifying officer(s) and I have disclosed to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize, and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

5/26/2011

S\LAURA F. FERGERSON

Laura F. Fergerson

Chief Executive Officer - Finance and Administration

I, Mark H. Otani, certify that:

1. I have reviewed this report on Form N-Q of Templeton Developing Markets Trust;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the schedules of investments included in this report fairly present in all material respects the investments of the registrant as of the end of the fiscal quarter for which the report is filed;

4. The registrant's other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940) and internal control over financial reporting (as defined in Rule 30a-3(d) under the Investment Company Act of 1940) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of a date within 90 days prior to the filing date of this report, based on such evaluation; and

(d) Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5. The registrant's other certifying officer(s) and I have disclosed to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize, and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

5/26/2011

S\MARK H. OTANI

Mark H. Otani

Chief Financial Officer and Chief Accounting Officer