Report of Independent Registered Public Accounting Firm The Board of Trustees of BNY Mellon Investment Funds III: We have examined management's assertion, included in the accompanying Management Statement Regarding Compliance With Certain Provisions of the Investment Company Act of 1940, that BNY Mellon Equity Income Fund (the "May 31st Fund"), BNY Mellon Global Equity Income Fund and BNY Mellon International Bond Fund (collectively, the "October 31st Funds") and BNY Mellon High Yield Fund (the "December 31st Fund") (collectively with the May 31st Fund and October 31st Funds, the "Funds"), each a series of BNY Mellon Investment Funds III complied with the requirements of subsections (b) and (c) of Rule 17f-2 under the Investment Company Act of 1940 (the Act) as of May 31, 2022. Management is responsible for its assertion about compliance with those requirements of subsections (b) and (c) of Rule 17f-2 of the Act (the specified requirements). Our responsibility is to express an opinion on management's assertion about the Funds' compliance with the specified requirements based on our examination. Our examination was conducted in accordance with attestation standards established by the American Institute of Certified Public Accountants. Those standards require that we plan and perform the examination to obtain reasonable assurance about whether management's assertion about compliance with the specified requirements is fairly stated, in all material respects. An examination involves performing procedures to obtain evidence about whether management's assertion is fairly stated in all material respects. The nature, timing, and extent of the procedures selected depend on our judgement, including an assessment of the risks of material misstatement of management's assertion, whether due to fraud or error. We believe that the evidence we obtained is sufficient and appropriate to provide a reasonable basis for our opinion. Included among our procedures were the following tests performed as of May 31, 2022, and with respect to agreement of security purchases and sales, for the period from October 31, 2021 (the date of the October 31st Funds' last examination), and for the period from December 31, 2021 (the date of the December 31st Fund's last examination), and for the period from September 30, 2021 (the date of the May 31st Fund's last examination) through May 31, 2022: 1. Count and inspection of all securities located in the vault of The Bank of New York Mellon Corporation in 570 Washington Blvd, Jersey City, NJ 07310 or where inspection could not be performed, application of alternative procedures; 2. Confirmation with the Custodian of all securities held, hypothecated, pledged or placed in escrow or out for transfer with brokers or pledgees, if any; 3. Obtained the Custodian reconciliation of security positions held by institutions in book entry form (e.g., the Federal Reserve Bank, The Depository Trust Company and various sub-custodians) to Custodian records and verified that reconciling items were cleared in a timely manner; 4. Reconciliation of the Funds' securities per the books and records of the Funds to those of the Custodian; 5. Agreement of pending purchase and sale activity for the Funds as of May 31, 2022, if any, to documentation of corresponding subsequent bank statements; 6. Agreement of five security purchases and five security sales or maturities since the date of the last examination, from the books and records of each fund to corresponding bank statements; 7. Confirmation of all repurchase agreements with broker(s)/bank(s) and/or agreement of corresponding subsequent cash receipts to bank statements and agreement of underlying collateral with the Custodian records, if any; 8. Review of the BNY Mellon Asset Servicing Custody and Securities Lending Services Service Organization Control Report ("SOC 1 Report") for the period April 1, 2021 - March 31, 2022 and noted no relevant findings were reported in the areas of Asset Custody and Trade Settlement. We believe that our examination provides a reasonable basis for our opinion. Our examination does not provide a legal determination on the Funds' compliance with specified requirements. In our opinion, management's assertion that the Funds complied with the requirements of subsections (b) and (c) of Rule 17f-2 of the Investment Company Act of 1940 as of May 31, 2022, with respect to securities reflected in the investment accounts of the Funds is fairly stated, in all material respects. This report is intended solely for the information and use of management and The Board of Trustees of BNY Mellon Investment Funds III, and the Securities and Exchange Commission and is not intended to be and should not be used by anyone other than these specified parties. /s/ KPMG LLP New York, New York December 7, 2022 December 7, 2022 Management Statement Regarding Compliance With Certain Provisions of the Investment Company Act of 1940 We, as members of management of BNY Mellon Equity Income Fund (the "May 31st Fund"), BNY Mellon Global Equity Income Fund and BNY Mellon International Bond Fund (collectively, the "October 31st Funds") and BNY Mellon High Yield Fund (the "December 31st Fund") (collectively with the May 31st Fund and October 31st Funds, the "Funds"), each a series of BNY Mellon Investment Funds III are responsible for complying with the requirements of subsections (b) and (c) of Rule 17f-2, "Custody of Investments by Registered Management Investment Companies" of the Investment Company Act of 1940. We are also responsible for establishing and maintaining effective internal controls over compliance with those requirements. We have performed an evaluation of the Funds' compliance with the requirements of subsections (b) and (c) of Rule 17f-2 as of May 31, 2022, for the period from October 31, 2021 (the date of the October 31st Funds' last examination) and for the period from December 31, 2021 (the date of the December 31st Fund's last examination) and for the period from September 30, 2021 (the date of the May 31st Fund's last examination) through May 31, 2022. Based on the evaluation, we assert that the Funds were in compliance with the requirements of subsections (b) and (c) of Rule 17f-2 of the Investment Company Act of as of May 31, 2022 and for the period from October 31, 2021 (the date of the October 31st Funds' last examination), for the period from December 31, 2021 (the date of the December 31st Fund's last examination) and for the period from September 30, 2021 (the date of the May 31st Fund's last examination) through May 31, 2022, with respect to securities reflected in the investment accounts of the Funds. BNY Mellon Investment Funds III Jim Windels Treasurer 1