```

                                                             OMB APPROVAL
                                                     OMB Number:       3235-0578
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                                                     hours per response.....
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                                 UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                   FORM N-Q

                   QUARTERLY SCHEDULE OF PORTFOLIO HOLDINGS
    OF REGISTERED MANAGEMENT INVESTMENT COMPANY

  Investment Company Act file number 811-21664

                         Pioneer Series Trust III
               (Exact name of registrant as specified in charter)

                       60 State Street, Boston, MA 02109
              (Address of principal executive offices) (ZIP code)

            Terrence J. Cullen, Pioneer Investment Management, Inc.,
                       60 State Street, Boston, MA 02109
                    (Name and address of agent for service)

Registrant's telephone number, including area code:  (617) 742-7825

Date of fiscal year end:   August 31

Date of reporting period:  November 30, 2015

Form N-Q is to be used by management investment companies, other than small
business investment companies registered on Form N-5 (239.24 and 274.5 of this
chapter), to file reports with the Commission, not later than 60 days after
close of the first and third fiscal quarters, pursuant to Rule 30b1-5 under
the Investment Company Act of 1940 (17 CFR 270.30b1-5).  The Commission may
use the information provided on Form N-Q in its regulatory, disclosure review,
inspection, and policymaking roles.

A registrant is required to disclose the information specified by Form N-Q,
and the Commission will make this information public. A registrant is not
required to respond to the collection of information contained in Form N-Q
unless the Form displays a currently valid Office of Management and Budget
("OMB") control number. Please direct comments concerning the accuracy of the
information collection burden estimate and any suggestions for reducing the
burden to Secretary, Securities and Exchange Commission, 450 Fifth Street, NW,
Washington, DC 20549-0609.  The OMB has reviewed this collection of information
under the clearance requirements of 44 U.S.C. ss. 3507.

<PAGE>
ITEM 1. Schedule of Investments.

File the schedules as of the close of the reporting period as set forth in
ss. 210.12-12  12-14 of Regulation S-X [17 CFR 210.12-12  12-14]. The
schedules need not be audited.
```

```

```

|                                                                                                                                                                                                    |      |   |   | Pioneer Disciplined Value Fund                                                                                                                     |   |         |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-----------|--------|--------|----------------------------------------------------------------------------------------------------------------------------------------------------|--------|--------------|
|                                                                                                                                                                                                    |      |   |   | Schedule of Investments 11/30/15 (unaudited)                                                                                                       |   |         |
|                                                                                                                                                                                                    |      |   |   |                                                                                                                                               |   |         |
|                                                                                                                                                                                                    | Shares    |   |   |                                                                                                                                               |   | Value        |
|                                                                                                                                                                                                    |      |   |   | COMMON STOCKS - 99.3%                                                                                                                              |   |         |
|                                                                                                                                                                                                    |      |   |   | Energy - 12.7%                                                                                                                                     |   |         |
|                                                                                                                                                                                                    |      |   |   | Oil & Gas Equipment & Services - 5.9%                                                                                                      |   |         |
|                                                                                                                                                                                                    | 430,791   |   |   | Halliburton Co.                                                                                                                                    | $      | 17,167,021   |
|                                                                                                                                                                                                    | 317,505   |   |   | Schlumberger, Ltd.                                                                                                                                 |   | 24,495,511   |
|                                                                                                                                                                                                    |      |   |   |                                                                                                                                               | $      | 41,662,532   |
|                                                                                                                                                                                                    |      |   |   | Oil & Gas Exploration & Production - 2.2%                                                                                                  |   |         |
|                                                                                                                                                                                                    | 406,316   |   |   | Newfield Exploration Co. *                                                                                                                         | $      | 15,545,650   |
|                                                                                                                                                                                                    |      |   |   | Oil & Gas Refining & Marketing - 4.6%                                                                                                      |   |         |
|                                                                                                                                                                                                    | 445,563   |   |   | Valero Energy Corp.                                                                                                                                | $      | 32,018,157   |
|                                                                                                                                                                                                    |      |   |   | Total Energy                                                                                                                                       | $      | 89,226,339   |
|                                                                                                                                                                                                    |      |   |   | Materials - 1.8%                                                                                                                                   |   |         |
|                                                                                                                                                                                                    |      |   |   | Commodity Chemicals - 1.8%                                                                                                                         |   |         |
|                                                                                                                                                                                                    | 129,985   |   |   | LyondellBasell Industries NV                                                                                                                       | $      | 12,455,163   |
|                                                                                                                                                                                                    |      |   |   | Total Materials                                                                                                                                    | $      | 12,455,163   |
|                                                                                                                                                                                                    |      |   |   | Capital Goods - 7.9%                                                                                                                               |   |         |
|                                                                                                                                                                                                    |      |   |   | Aerospace & Defense - 3.2%                                                                                                                     |   |         |
|                                                                                                                                                                                                    | 60,062    |   |   | Northrop Grumman Corp.                                                                                                                             | $      | 11,193,154   |
|                                                                                                                                                                                                    | 94,814    |   |   | Raytheon Co.                                                                                                                                       |   | 11,759,780   |
|                                                                                                                                                                                                    |      |   |   |                                                                                                                                               | $      | 22,952,934   |
|                                                                                                                                                                                                    |      |   |   | Industrial Machinery - 4.7%                                                                                                                        |   |         |
|                                                                                                                                                                                                    | 559,720   |   |   | Ingersoll-Rand Plc                                                                                                                                 | $      | 32,838,772   |
|                                                                                                                                                                                                    |      |   |   | Total Capital Goods                                                                                                                                | $      | 55,791,706   |
|                                                                                                                                                                                                    |      |   |   | Transportation - 2.1%                                                                                                                              |   |         |
|                                                                                                                                                                                                    |      |   |   | Airlines - 2.1%                                                                                                                                    |   |         |
|                                                                                                                                                                                                    | 359,813   |   |   | American Airlines Group, Inc.                                                                                                                      | $      | 14,845,884   |
|                                                                                                                                                                                                    |      |   |   | Total Transportation                                                                                                                               | $      | 14,845,884   |
|                                                                                                                                                                                                    |      |   |   | Consumer Durables & Apparel - 2.0%                                                                                                             |   |         |
|                                                                                                                                                                                                    |      |   |   | Household Appliances - 2.0%                                                                                                                        |   |         |
|                                                                                                                                                                                                    | 84,507    |   |   | Whirlpool Corp.                                                                                                                                    | $      | 13,734,078   |
|                                                                                                                                                                                                    |      |   |   | Total Consumer Durables & Apparel                                                                                                              | $      | 13,734,078   |
|                                                                                                                                                                                                    |      |   |   | Media - 2.4%                                                                                                                                       |   |         |
|                                                                                                                                                                                                    |      |   |   | Movies & Entertainment - 2.4%                                                                                                                  |   |         |
|                                                                                                                                                                                                    | 245,167   |   |   | Time Warner, Inc.                                                                                                                                  | $      | 17,156,787   |
|                                                                                                                                                                                                    |      |   |   | Total Media                                                                                                                                        | $      | 17,156,787   |
|                                                                                                                                                                                                    |      |   |   | Retailing - 1.5%                                                                                                                                   |   |         |
|                                                                                                                                                                                                    |      |   |   | Homefurnishing Retail - 1.5%                                                                                                                       |   |         |
|                                                                                                                                                                                                    | 192,503   |   |   | Bed Bath & Beyond, Inc. *                                                                                                                      | $      | 10,495,264   |
|                                                                                                                                                                                                    |      |   |   | Total Retailing                                                                                                                                    | $      | 10,495,264   |
|                                                                                                                                                                                                    |      |   |   | Food, Beverage & Tobacco - 7.8%                                                                                                                |   |         |
|                                                                                                                                                                                                    |      |   |   | Brewers - 2.8%                                                                                                                                     |   |         |
|                                                                                                                                                                                                    | 210,948   |   |   | Molson Coors Brewing Co. (Class B)                                                                                                                 | $      | 19,413,544   |
|                                                                                                                                                                                                    |      |   |   | Agricultural Products - 1.3%                                                                                                                       |   |         |
|                                                                                                                                                                                                    | 254,611   |   |   | Archer-Daniels-Midland Co.                                                                                                                         | $      | 9,290,755    |
|                                                                                                                                                                                                    |      |   |   | Packaged Foods & Meats - 2.2%                                                                                                                  |   |         |
|                                                                                                                                                                                                    | 315,973   |   |   | Tyson Foods, Inc.                                                                                                                                  | $      | 15,798,650   |
|                                                                                                                                                                                                    |      |   |   | Tobacco - 1.5%                                                                                                                                     |   |         |
|                                                                                                                                                                                                    | 227,559   |   |   | Reynolds American, Inc.                                                                                                                            | $      | 10,524,604   |
|                                                                                                                                                                                                    |      |   |   | Total Food, Beverage & Tobacco                                                                                                                 | $      | 55,027,553   |
|                                                                                                                                                                                                    |      |   |   | Health Care Equipment & Services - 4.0%                                                                                                        |   |         |
|                                                                                                                                                                                                    |      |   |   | Health Care Services - 2.1%                                                                                                                        |   |         |
|                                                                                                                                                                                                    | 176,291   |   |   | Express Scripts Holding Co. *                                                                                                                      | $      | 15,069,355   |
|                                                                                                                                                                                                    |      |   |   | Managed Health Care - 1.9%                                                                                                                         |   |         |
|                                                                                                                                                                                                    | 126,770   |   |   | Aetna, Inc.                                                                                                                                        | $      | 13,025,618   |
|                                                                                                                                                                                                    |      |   |   | Total Health Care Equipment & Services                                                                                                         | $      | 28,094,973   |
|                                                                                                                                                                                                    |      |   |   | Pharmaceuticals, Biotechnology & Life Sciences - 6.6%                                                                                          |   |         |
|                                                                                                                                                                                                    |      |   |   | Pharmaceuticals - 6.6%                                                                                                                             |   |         |
|                                                                                                                                                                                                    | 320,337   |   |   | Johnson & Johnson                                                                                                                              | $      | 32,430,918   |
|                                                                                                                                                                                                    | 264,655   |   |   | Merck & Co., Inc.                                                                                                                              |   | 14,029,362   |
|                                                                                                                                                                                                    |      |   |   |                                                                                                                                               | $      | 46,460,280   |
|                                                                                                                                                                                                    |      |   |   | Total Pharmaceuticals, Biotechnology & Life Sciences                                                                                           | $      | 46,460,280   |
|                                                                                                                                                                                                    |      |   |   | Banks - 17.5%                                                                                                                                      |   |         |
|                                                                                                                                                                                                    |      |   |   | Diversified Banks - 11.3%                                                                                                                          |   |         |
|                                                                                                                                                                                                    | 1,144,919 |   |   | Bank of America Corp.                                                                                                                              | $      | 19,955,938   |
|                                                                                                                                                                                                    | 326,334   |   |   | JPMorgan Chase & Co.                                                                                                                           |   | 21,759,951   |
|                                                                                                                                                                                                    | 373,175   |   |   | US Bancorp                                                                                                                                         |   | 16,378,651   |
|                                                                                                                                                                                                    | 387,141   |   |   | Wells Fargo & Co.                                                                                                                              |   | 21,331,469   |
|                                                                                                                                                                                                    |      |   |   |                                                                                                                                               | $      | 79,426,009   |
|                                                                                                                                                                                                    |      |   |   | Regional Banks - 6.2%                                                                                                                              |   |         |
|                                                                                                                                                                                                    | 428,900   |   |   | Citizens Financial Group, Inc.                                                                                                                     | $      | 11,421,607   |
|                                                                                                                                                                                                    | 250,619   |   |   | SunTrust Banks, Inc.                                                                                                                               |   | 10,881,877   |
|                                                                                                                                                                                                    | 226,023   |   |   | The PNC Financial Services Group, Inc.                                                                                                             |   | 21,587,457   |
|                                                                                                                                                                                                    |      |   |   |                                                                                                                                               | $      | 43,890,941   |
|                                                                                                                                                                                                    |      |   |   | Total Banks                                                                                                                                        | $      | 123,316,950  |
|                                                                                                                                                                                                    |      |   |   | Diversified Financials - 6.7%                                                                                                                      |   |         |
|                                                                                                                                                                                                    |      |   |   | Specialized Finance - 1.9%                                                                                                                         |   |         |
|                                                                                                                                                                                                    | 227,210   |   |   | Nasdaq, Inc.                                                                                                                                       | $      | 13,319,050   |
|                                                                                                                                                                                                    |      |   |   | Consumer Finance - 1.5%                                                                                                                            |   |         |
|                                                                                                                                                                                                    | 343,390   |   |   | Synchrony Financial                                                                                                                                | $      | 10,930,104   |
|                                                                                                                                                                                                    |      |   |   | Asset Management & Custody Banks - 1.3%                                                                                                        |   |         |
|                                                                                                                                                                                                    | 272,376   |   |   | Invesco, Ltd.                                                                                                                                      | $      | 9,176,347    |
|                                                                                                                                                                                                    |      |   |   | Investment Banking & Brokerage - 2.0%                                                                                                          |   |         |
|                                                                                                                                                                                                    | 403,081   |   |   | Morgan Stanley Co.                                                                                                                                 | $      | 13,825,678   |
|                                                                                                                                                                                                    |      |   |   | Total Diversified Financials                                                                                                                       | $      | 47,251,179   |
|                                                                                                                                                                                                    |      |   |   | Insurance - 5.7%                                                                                                                                   |   |         |
|                                                                                                                                                                                                    |      |   |   | Life & Health Insurance - 2.1%                                                                                                                 |   |         |
|                                                                                                                                                                                                    | 270,441   |   |   | Lincoln National Corp.                                                                                                                             | $      | 14,871,551   |
|                                                                                                                                                                                                    |      |   |   | Multi-line Insurance - 2.9%                                                                                                                        |   |         |
|                                                                                                                                                                                                    | 441,766   |   |   | The Hartford Financial Services Group, Inc.                                                                                                        | $      | 20,162,200   |
|                                                                                                                                                                                                    |      |   |   | Property & Casualty Insurance - 0.7%                                                                                                           |   |         |
|                                                                                                                                                                                                    | 123,402   |   |   | XL Group Plc                                                                                                                                       | $      | 4,711,488    |
|                                                                                                                                                                                                    |      |   |   | Total Insurance                                                                                                                                    | $      | 39,745,239   |
|                                                                                                                                                                                                    |      |   |   | Software & Services - 8.5%                                                                                                                     |   |         |
|                                                                                                                                                                                                    |      |   |   | Internet Software & Services - 5.9%                                                                                                            |   |         |
|                                                                                                                                                                                                    | 1,408,156 |   |   | eBay, Inc. *                                                                                                                                       | $      | 41,667,335   |
|                                                                                                                                                                                                    |      |   |   | Systems Software - 2.6%                                                                                                                            |   |         |
|                                                                                                                                                                                                    | 466,138   |   |   | Oracle Corp.                                                                                                                                       | $      | 18,165,398   |
|                                                                                                                                                                                                    |      |   |   | Total Software & Services                                                                                                                      | $      | 59,832,733   |
|                                                                                                                                                                                                    |      |   |   | Technology Hardware & Equipment - 3.1%                                                                                                         |   |         |
|                                                                                                                                                                                                    |      |   |   | Communications Equipment - 3.1%                                                                                                                    |   |         |
|                                                                                                                                                                                                    | 789,515   |   |   | Cisco Systems, Inc.                                                                                                                                | $      | 21,514,284   |
|                                                                                                                                                                                                    |      |   |   | Total Technology Hardware & Equipment                                                                                                          | $      | 21,514,284   |
|                                                                                                                                                                                                    |      |   |   | Semiconductors & Semiconductor Equipment - 1.4%                                                                                                |   |         |
|                                                                                                                                                                                                    |      |   |   | Semiconductors - 1.4%                                                                                                                              |   |         |
|                                                                                                                                                                                                    | 632,585   |   |   | Micron Technology, Inc. *                                                                                                                          | $      | 10,077,079   |
|                                                                                                                                                                                                    |      |   |   | Total Semiconductors & Semiconductor Equipment                                                                                                 | $      | 10,077,079   |
|                                                                                                                                                                                                    |      |   |   | Utilities - 7.6%                                                                                                                                   |   |         |
|                                                                                                                                                                                                    |      |   |   | Electric Utilities - 4.8%                                                                                                                          |   |         |
|                                                                                                                                                                                                    | 263,465   |   |   | American Electric Power Co., Inc.                                                                                                                  | $      | 14,756,675   |
|                                                                                                                                                                                                    | 695,850   |   |   | Exelon Corp.                                                                                                                                       |   | 19,003,664   |
|                                                                                                                                                                                                    |      |   |   |                                                                                                                                               | $      | 33,760,339   |
|                                                                                                                                                                                                    |      |   |   | Multi-Utilities - 2.8%                                                                                                                             |   |         |
|                                                                                                                                                                                                    | 505,891   |   |   | Public Service Enterprise Group, Inc.                                                                                                              | $      | 19,780,338   |
|                                                                                                                                                                                                    |      |   |   | Total Utilities                                                                                                                                    | $      | 53,540,677   |
|                                                                                                                                                                                                    |      |   |   | TOTAL COMMON STOCKS                                                                                                                                |   |         |
|                                                                                                                                                                                                    |      |   |   | (Cost $666,473,640)                                                                                                                                | $      | 698,566,168  |
|                                                                                                                                                                                                    |      |   |   |                                                                                                                                               |   |         |
|                                                                                                                                                                                                    |      |   |   | TOTAL INVESTMENT IN SECURITIES - 99.3%                                                                                                             |   |         |
|                                                                                                                                                                                                    |      |   |   | (Cost $666,473,640) (a)                                                                                                                            | $      | 698,566,168  |
|                                                                                                                                                                                                    |      |   |   |                                                                                                                                               |   |         |
|                                                                                                                                                                                                    |      |   |   | OTHER ASSETS & LIABILITIES - 0.7%                                                                                                              | $      | 5,006,562    |
|                                                                                                                                                                                                    |      |   |   |                                                                                                                                               |   |         |
|                                                                                                                                                                                                    |      |   |   | TOTAL NET ASSETS - 100.0%                                                                                                                          | $      | 703,572,730  |
|                                                                                                                                                                                                    |      |   |   |                                                                                                                                               |   |         |
|                                                                                                                                                                                                    | *         |   |   | Non-income producing security.                                                                                                                     |   |         |
|                                                                                                                                                                                                    |      |   |   |                                                                                                                                               |   |         |
|                                                                                                                                                                                                    | (A.D.R.)  |   |   | American Depositary Receipts.                                                                                                                      |   |         |
|                                                                                                                                                                                                    |      |   |   |                                                                                                                                               |   |         |
|                                                                                                                                                                                                    | (a)       |   |   | At November 30, 2015, the net unrealized appreciation on investments based on cost for federal income tax purposes of $666,473,640 was as follows: |
|                                                                                                                                                                                                    |      |   |   |                                                                                                                                               |   |         |
|                                                                                                                                                                                                    |      |   |   | Aggregate gross unrealized appreciation for all investments in which                                                                               |   |         |
|                                                                                                                                                                                                    |      |   |   | there is an excess of value over tax cost                                                                                                          | $      | 55,214,362   |
|                                                                                                                                                                                                    |      |   |   |                                                                                                                                               |   |         |
|                                                                                                                                                                                                    |      |   |   | Aggregate gross unrealized depreciation for all investments in which                                                                               |   |         |
|                                                                                                                                                                                                    |      |   |   | there is an excess of tax cost over value                                                                                                          |   | (23,121,834) |
|                                                                                                                                                                                                    |      |   |   |                                                                                                                                               |   |         |
|                                                                                                                                                                                                    |      |   |   | Net unrealized depreciation                                                                                                                        | $      | 32,092,528   |
|                                                                                                                                                                                                    |      |   |   |                                                                                                                                               |   |         |
| Various inputs are used in determining the value of the Fund's investments.  These inputs are summarized in the three broad levels listed below.                                              |
|                                                                                                                                                                                                    |      |   |   |                                                                                                                                               |   |         |
| Level 1 – quoted prices in active markets for identical securities                                                                                                                                |      |   |
| Level 2 – other significant observable inputs (including quoted prices for similar securities, interest rates, prepayment speeds, credit risk, etc.) See Notes to Financial Statements - Note 1A. |
| Level 3 – significant unobservable inputs (including the Fund's own assumptions in determining fair value of investments) See Notes to Financial Statements - Note 1A.                            |
|                                                                                                                                                                                                    |      |   |   |                                                                                                                                               |   |         |
| The following is a summary of the inputs used as of November 30, 2015, in valuing the Fund's investments:                                                                                               |      |   |
|                                                                                                                                                                                                    |      |   |   |                                                                                                                                               |   |         |

|                                                                                          |   | Level 1 |        |   | Level 2 |   |   | Level 3 |   |   | Total  |   |
|-----------------------------------------------------------------------------------------------|--------|---------|-------------|--------|---------|--------|--------|---------|--------|--------|--------|--------|
| Common Stocks                                                                                 |   | $       | 698,566,168 |   |    | $      | -      |    |   | $      | -      |   |   | $ | 698,566,168 |   |
| Total                                                                                         |   | $       | 698,566,168 |   |    | $      | -      |    |   | $      | -      |   |   | $ | 698,566,168 |   |
|                                                                                          |   |    |        |   |    |   |   |    |   |   |   |   |   |   |   |   |
| During the period ended November 30, 2015, there were no transfers between Levels 1, 2 and 3. |   |    |        |   |    |   |   |    |   |   |   |   |   |