EX-99.(S) 11 dex99s.htm POWER OF ATTORNEY

Power of Attorney

Exhibit (s)

POWER OF ATTORNEY

We, the undersigned officers and Trustees of Eaton Vance National Municipal Opportunities Trust, a Massachusetts business trust, do hereby severally constitute and appoint Barbara E. Campbell, Thomas E. Faust Jr., Maureen A. Gemma and Frederick S. Marius, or any of them, to be true, sufficient and lawful attorneys, or attorney for each of us, to sign for each of us, in the name of each of us in the capacities indicated below, Registration Statements and any and all amendments (including post-effective amendments) to such Registration Statements on Form N-2 filed by Eaton Vance National Municipal Opportunities Trust with the Securities and Exchange Commission in respect of any class of shares of beneficial interest and other documents and papers relating thereto.

IN WITNESS WHEREOF we have hereunto set our hands on the dates set opposite our respective signatures.

Signature		Title		Date
/S/    CYNTHIA J. CLEMSON         Cynthia J. Clemson		President and Principal Executive Officer		April 27, 2009
/S/    BARBARA E. CAMPBELL         Barbara E. Campbell		Treasurer and Principal Financial and Accounting Officer		April 27, 2009
/S/    BENJAMIN C. ESTY         Benjamin C. Esty		Trustee		April 27, 2009
/S/    THOMAS E. FAUST JR.         Thomas E. Faust Jr.		Trustee		April 27, 2009
/S/    ALLEN R. FREEDMAN         Allen R. Freedman		Trustee		April 27, 2009
/S/    WILLIAM H. PARK         William H. Park		Trustee		April 27, 2009
/S/    RONALD A. PEARLMAN         Ronald A. Pearlman		Trustee		April 27, 2009
/S/    HELEN FRAME PETERS         Helen Frame Peters		Trustee		April 27, 2009
/S/    HEIDI L. STEIGER         Heidi L. Steiger		Trustee		April 27, 2009
/S/    LYNN A. STOUT         Lynn A. Stout		Trustee		April 27, 2009
/S/    RALPH F. VERNI         Ralph F. Verni		Trustee		April 27, 2009