Exhibit 23(b)
Consent of Independent Registered Public Accounting Firm
We consent to the incorporation by reference in this Registration Statement of Huntington
Bancshares Incorporated on Form S-3 of our report dated February 15, 2005 (March 1, 2005 as to Note
23), related to the consolidated financial statements, and our report dated February 15, 2005,
related to managements report on the effectiveness of internal control over financial reporting,
incorporated by reference in the Annual Report on Form 10-K of Huntington Bancshares Incorporated
for the year ended December 31, 2004 and to the reference to us under the heading Experts in the
Prospectus, which is part of this Registration Statement.
/s/ Deloitte & Touche LLP
Columbus, Ohio
January 18, 2006