CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
We consent to the incorporation by reference in this Post-Effective
Amendment No. 5 to Registration Statement No. 333-114495 of Oppenheimer
Principal Protected Trust III, with respect to the Oppenheimer Principal
Protected Main Street Fund III, on Form N-1A, of our reports dated February 29,
2008, relating to the consolidated financial statements of Merrill Lynch Bank
USA for the year ended December 28, 2007 (which report expresses an unqualified
opinion and includes an explanatory paragraph regarding the changes in
accounting methods in 2007 relating to the adoption of Statement of Financial
Accounting Standards No. 157, "Fair Value Measurement," Statement of Financial
Accounting Standards No. 159, "The Fair Value Option for Financial Assets and
Financial Liabilities - Including an amendment of FASB Statement No. 115," and
FASB Interpretation No. 48, "Accounting for Uncertainty in Income Taxes, an
Interpretation of FASB Statement No. 109," and in 2006 for share-based payments
to conform to Statement of Financial Accounting Standards No. 123 (revised
2004), "Share-Based Payment"), management's report on the effectiveness of
internal control over financial reporting and to the reference to us under the
heading "Independent Registered Public Accounting Firm" in the Statement of
Additional Information, which is part of such Registration Statement.
/s/ Deloitte & Touche LLP
Salt Lake City, Utah
May 16, 2008