Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the use in this Registration Statement on Amendment No. 2 to Form S-1 of our report dated February 2, 2007 relating to the statement of financial condition of Currency Shares Japanese Yen Trust, which appears in such Registration Statement. We also consent to the reference to us under the heading “Experts” in such Registration Statement.

/s/ PricewaterhouseCoopers LLP

Baltimore, Maryland

February 2, 2007