Exhibit 23.1
CONSENT OF
INDEPENDENT
REGISTERED
PUBLIC
ACCOUNTING
FIRM
We consent to the incorporation by reference in the following Registration Statements of Huntington
Bancshares Incorporated and subsidiaries (the Company) of our report dated February 23, 2009
(September 3, 2009 as to Note 24) relating to the consolidated financial statements of the Company
(which report expresses an unqualified opinion on the consolidated financial statements and
includes an explanatory paragraph regarding the change in Segment Information) and our report dated
February 23, 2009 on the effectiveness of the Companys internal control over financial reporting,
appearing in Item 8 of this current report on Form 8-K of the
Company dated September 3, 2009.
Form S-8 333-158335 pertaining to Huntington Bancshares Incorporated issuance of common stock under
the Huntington Supplemental Stock Purchase and Tax Savings Plan and Trust dated March 31, 2009;
Form S-3 No. No. 333-156700 pertaining to Huntington Bancshares Incorporated automatic shelf
registration of common stock, preferred stock, and debt securities dated January 13, 2009;
Form S-8 No. 333-153573 pertaining to Huntington Bancshares Incorporated issuance of common stock
under Huntington Investment and Tax Savings Plan dated September 18, 2008;
Form S-3 No. 333-131143 pertaining to Huntington Bancshares Incorporated issuance of common stock,
preferred stock, debt securities, junior subordinated debt securities, warrants and guarantees
dated May 7, 2007 and Post-effective Amendment No. 1 dated May 7, 2007;
Form S-8 No. 333-140897 pertaining to Sky Financial Group, Inc. 2002 Stock Option and Stock
Appreciation Rights Plan, as amended; Sky Financial Group Inc. 1998 Stock Option Plan for
Employees; Second Restatement of the Sky Financial Group, Inc. Amended and Restated 1998 Stock
Option Plan for Directors; Century Financial Corporation Stock Option Plan; Amended and Restated
Mid Am, Inc. 1997 Stock Option Plan; and Citizens Bancshares, Inc. Non-Statutory Sock Option and
Stock Appreciation Rights Plan dated July 2, 2007;
Form S-8 No. 333-144403 pertaining to Huntington Bancshares Incorporated 2007 Stock and Long-Term
Incentive Plan; Sky Financial Group, Inc. Profit Sharing, 401(k) and ESOP Plan, as amended; Sky
Financial Group, Inc. Non-Qualified Retirement Plan, as amended; Sky Financial Group, Inc.
Non-Qualified Retirement Plan II, as amended Inducement Grant dated July 6, 2007;
Form S-3 No. 33-52569 pertaining to Huntington Bancshares Incorporated Dividend Reinvestment and
Common Stock Purchase Plan Post-Effective Amendment No. 2 dated September 25, 1998;
Form S-8 No. 333-136692 pertaining to Huntington Bancshares Incorporated Executive Deferred
Compensation Plan dated August 17, 2006;
Form S-8 No. 333-113639 pertaining to the UNB Corp. 1987 Stock Option and Performance Unit Plan,
UNB Corp. 1997 Stock Option Plan and BancFirst Ohio Corp. 1997 Omnibus Stock Incentive Plan
Post-Effective Amendment No. 1 on Form S-8 to Form S-4 dated March 16, 2004;
Form S-8 No. 333-126256 pertaining to Huntington Bancshares Incorporated 2004 Stock and Long-Term
Incentive Plan as filed on June 30, 2005;
Form S-8 No. 333-61074 pertaining to Huntington Bancshares Incorporated 2001 Stock and Long-Term
Incentive Plan Post-Effective Amendment No. 1 dated June 30, 2005;
Form S-8 No. 333-75032 pertaining to Huntington Bancshares Incorporated Employee Stock Incentive
Plan dated December 13, 2001;
Form S-8 No. 33-44208 pertaining to Huntington Supplemental Executive Stock Purchase and Tax
Savings Plan and Trust Post-Effective Amendment No. 1 dated April 1, 1998;
Form S-8 No. 33-52553 pertaining to Huntington Bancshares Incorporated 1994 Stock Option Plan dated
March 8, 1994;
Form S-8 No. 33-38784 pertaining to Huntington Bancshares Incorporated 1990 Stock Option Plan dated
January 28, 1991;
Form S-8 No. 33-10546 pertaining to Huntington Bancshares Incorporated Deferred Compensation Plan
for Directors Post-Effective Amendment No. 2 dated January 28, 1991;
Form S-8 No. 33-41774 pertaining to Huntington Bancshares Incorporated Deferred Compensation Plan
for Huntington Bancshares Incorporated Directors dated July 19, 1991;
Form S-8 No. 33-37373 pertaining to Huntington Bancshares Incorporated 1990 Stock Option Plan dated
October 18, 1990;
Form S-11 (no file number) filed with the Office of the Comptroller of the Currency in connection
with the potential future issuance of Class C or Class D preferred securities of Huntington
National Bank on May 18, 2001.
/s/ Deloitte & Touche, LLP
Columbus, Ohio
September 3, 2009